Temporary sticky questions, started 13/4/15

However, this is a serious matter, if the offensive posts and private messages from members continue THEY WILL ultimately result in account suspensions.

Members are expected to be civil to one another at all times. Also, this is not face book or a games site.

We all want everyone to enjoy being here but this is fundamentally a serious forum for learning.

If you would like to comment on other site issues please do so on the Lantern Thread. Thank you.

Interest Posts:

FTJ means "For the Juniors"

1) Year 8 Sample Test for International Olympiad of Mathematics Thanks for providing it Alan.

I though some students might like to challenge themselves with it.

2) Factorising technique (For the middle students ) Thanks Alan

3) A problem with averages (means) Thanks Alan and Melody

4) Percentage problem FTJ Thanks Squaddy and DarkBlaze347

5) Average speeds - these are tricky Thanks CPhill

6) Impressive trigonometry Thanks Heureka

7) Forming and solving a siultaneous equ geometry problem Thanks Zacismyname and Alan

8) Marbles and children - Great question Thanks CPhill and anon

9) Temperature change FTJ Thanks CPhill

10) Unusual rectangle question Thanks Alan

11) Little number problem - good for everyone Thanks Alan and EinsteinJr

12) Diophantine Equation (continued) Thanks Melody CPhill and Bertie

13) When will the hands of the clock point in the same direction? Thanks CPhill, Fiora and Alan

14) Bearings - where is that other boat?! Thanks Geno and zacismyname

15) Limit as x tends to infinity - using L'Hopital's Rule Thanks Alan

16) Complicated Trig with more amazing LaTex Thanks Heureka

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 27 · 2015-05-09T04:09:39

Sun 10/5/15

If you would like to comment on other site issues please do so on the Lantern Thread. Thank you.

Interest Posts:

FTJ means "For the Juniors"

1) A gift from Chris and a nostalgic look at times gone by. Thanks Chris and a big thank you to everyone that joined in the thread as well as all those who contribute so much to making this forum a really great place to be :)

Thanks Morgan Tud for taking us on this trip down Memory Lane. There have been some very fun times on this forum.

2) Where can the spies sit? Puzzle by MathsGod1

3) Coefficient in a perfect square binomial expansion Thanks Melody and Chris

4) What number is a billion ? Thanks MathsGod1, Mr Genius and EinsteinJr

5) Sum of all positive integers is -1/12 ? Thanks EinsteinJr and Daedalus.

6) Follow up to yesterday's clock problem (13) Thanks Civonamzuk, CPhill and Alan

7) What is the biggest Remainder - Graphical solution Thanks Alan

8) Ratios and angles FTJ Thanks CPhill

9) Understanding fractional indices Thanks Headingnorth

10) How many steps on the escalator? Thanks Headingnorth

11) Will the pole fit ? Thanks CPhill

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 28 · 2015-05-10T02:18:25

Mon 11/5/15

If you would like to comment on other site issues please do so on the Lantern Thread. Thank you.

Interest Posts:

FTJ means "For the Juniors"

1) Geometry and algebra challenge Puzzle by Alan.

If you are a good middle high student you should give it a go! Thanks Alan

2) MGs benches and spies puzzle (Provided by MathsGod1 ) Thanks Alan, CPhill and Melody

3) Postal Puzzle Provided by Civonamzuk Thanks Alan

4) A puzzle with 2s but not 2+2 Thanks xerxes, Melody and Badinage

5) Equatorial Puzzle by Mahthcad

6) Using a binomial expansion to cube a number Thanks Alan

7) Area of a triangle Thanks Heureka,Civonamzuk Alan

8) Fractals Thanks Heureka and Melody

9) Finding terms with a recusive formula Thanks Alan

10) Working with ratios FTJ Thanks Alan

11) Remainder Theorem Thanks CPhill

12) Proof with Wilson's Theorem (revisit requested by Badinage) Thanks Mathcad and Alan

13) Finding the diagonal of a box Thanks Xerxes and Melody

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 29 · 2015-05-11T02:32:53

Tues 12/5/15

If you would like to comment on other site issues please do so on the Lantern Thread. Thank you.

FTJ means 'For the juniors'

Interest Posts:

1) Logic Puzzle Thanks Geno

2) Forming and solving simultaneous equations Thanks Alan

3) What is 8 divided by 1/4 FTJ Thanks DarkBlaze347

4) How old am I ? Thanks CPhill

5) Simple Factorisation FTJ Thanks Geno and Melody

6) Money compounding quarterly - great explanation Thanks Zac

7) Finding time in a compounding problem Thanks Zac and Alan

8) How fast is the Earth traveling around the Sun? Thanks Zac an Alan

9) Finding linear speed from radial velocity Thanks Alan

10) Using Wilson's Theorem Cont Thanks Alan, Mathcad and Bertie

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 30 · 2015-05-12T12:38:12

Wed 13/5/15

If you would like to comment on other site issues please do so on the Lantern Thread. Thank you.

FTJ means 'For the juniors'

Interest Posts:

1) Alan's Geometry Puzzle continued Brodude, Headingnorth and Melody

2) Limiting sum of a Series Great answer from Alan

3) Repeating decimals Thanks CPhill

4) Understanding polynomials Thanks CPhill

5) Nine times table (this is a great little 'trick') FTJ Thanks Feliciabaugh110722

6) What does ! mean in maths questions? FTJ Thanks anon and CPhill

7) How do you change a recurring decimal to a fraction? Thanks Alan

8) Setting up and solving a difficult equation Thanks CPhill

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 31 · 2015-05-13T09:39:34

Thurs 14/5/15

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Interest Posts:

FTJ means 'For the juniors'

1) Channel 21 News report Thanks HeatherFeather

2) Great little logic puzzle Melody

3) Light and the universe Great concept question from Squareroot. Thanks GirlsNightOut and Nauseated.

4) Equation solution Thanks Heureka

5) Ratios Thanks CPhill

6) Watery Puzzle provided by Fiora No answers yet.

7) Playing with indices Melody

8) Work done Thanks Alan

9) Annuity Melody

10) Finding roots of a polynomial using synthetic division Thanks CPhill

11) sin3x=-0.6 Melody and Heureka

12) Solve for X. It is not a pretty equation. Thanks Melody, CPhill, Fiora and Alan

13) Geometry question Thanks Geno and Civonamzuk

14) How DO you solve equations FTJ Melody

15) The escalator revisited. Thanks HeadingNorth and CPhill

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 32 · 2015-05-14T08:34:33

Fri 15/5/15

If you would like to comment on other site issues please do so on the Lantern Thread. Thank you.

Interest Posts:

FTJ means 'For the juniors'

1) HAPPY BIRTHDAY HEATHER Hip, hip horrah!

2) 0/0 undefined or indeterminant ? Thanks EinsteinJr and CPhill

3) How do you work out the thickness of Aluminium foil ? Melody

4) Finding the area of a triangle Thanks Alan, Civonamzuk, CPhill and Fiora

5) Square root of -7 FTJ Dgb4thebest, MathsGod1 and Melody

6) Probability that A roll a 6 first. Great answer by Alan.

7) Factorizing quadratics Thanks Alan and Melody

8) Finding an inverse function Thanks Alan, Gibsonj338 and Melody

9) Find r then T₈ of a GP Thanks Heureka

10) Converting decimal to binary Thanks Alan, CPhill, Gibsonj338 and Melody

11) Finding y intercept FTJ+ Thanks CPhill

12) Find the area of the emblem Thanks Alan and Heureka

13) Simultaneous solution (graphing technique used) Thanks CPhill

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 33 · 2015-05-15T01:18:21

Sat 16/5/15

Sun 17/5/15

If you would like to comment on other site issues please do so on the Lantern Thread. Thank you.

Interest Posts:

FTJ means 'For the juniors'

1) This is HILARIOUS Thanks Chris

2) Puzzle - dividing land equally Thanks Civonamzuk and Alan

3) Converting basse10 to binary (continued) Thanks Heureka et al

4) How to solve an equation. FTJ Melody

This is a very basic intoduction to equation solving. It is a continuing thread.

I am doing this for MathsGod1 but others who want to understand are welcome to join in!

5) Manipulating Trig identities Thanks Heureka and Fiora

6) Inverse functions Thanks CPhill

7) Difference of 2 squares with no letters! Thanks anon, Radix and Melody

8) If you square a neg is the answer positive? FTJ Thanks Alan

9) Manipulating imaginary numbers (easy) Thanks CPhill

10) Great ratio question! Thanks CPhill

11) Pythagorean Theorem Thanks Alan, Melody and Heureka

12) Pentagon Geometry Thanks Fiora and Alan

13) Trigonometry and bearings Thanks CPhill

14) Probability Answers already given: Thanks CPhill and Melody

(5 new questions by Mellie on this page, they are maked with question marks in the margin)

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 34 · 2015-05-17T10:25:47

Mon 18/5/15

If you would like to comment on other site issues please do so on the Lantern Thread. Thank you.

FTJ means 'For the juniors'

Interest Posts:

1) The Unfortunate Merchant (Puzzle from EinsteinJr) Thanks CPhill and Alan

2) What is so special about Euler's number (e) Thanks CPhill and Melody

3) Solving an inequality Thanks DarkBlaze347

4) Find height of water tank. Thanks Heureka

5) What are binary numbers? Melody

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 35 · 2015-05-18T11:23:21

Tues 19/5/15

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Interest Posts:

FTJ means 'For the juniors'

1) Music Report by DGB4thebest.

Dgb has been granted permision to do one music report each day.

If no one spoils it, it should be fun. Thanks Dbg :)

2) Kitty joins the fun - Has Zegroes lost his g ...... Will he be in Sisyphus's boulder for ever???

3) Where do square roots go with PEDMAS? FTJ Thanks Andrew1714 and Melody

4) Comparing Fractions FTJ Thanks MathsGod1

5) Finding height using similar figures Thanks DarkBlaze347 and Zacismyname

6) Estimating circumference FTJ Thanks Andrew1714, ShadowBolt04 and Melody

7) A circular problem from Civonamzuk Thanks CPhill, Alan and Heureka

8) Find interior angle of a regular polygon. Thanks CPhill and Kitty<3

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 36 · 2015-05-19T01:50:55

Wed 20/5/15

If you would like to comment on other site issues please do so on the Lantern Thread. Thank you.

Interest Posts:

FTJ means 'For the juniors'

1) Music report thanks Dbg4thebest

2) Number Puzzle - (thanks Trincent) Thanks EinsterinJr

3) Last 2 digits of 5^2015 Thanks Radix and Melody

4) How can you remember mean mode and median? Thanks MathsGod1 and anons

5) Another circle special from Civonamzuk (puzzle) Thanks anon

6) A question regarding the forum (Thanks ShadowBolt04) Melody

7) Understanding polynomials and their roots Thanks CPhill

8) Another polynomial question Thanks CPhill

9) Trig simultaneous equations Thanks Heureka and Melody

10) Given median, mean and restrictions, find range. FTJ+ Melody

11) 2 taps filling a pool. Forget it, one tap is better. Thanks CPhill and Melody

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 37 · 2015-05-20T02:26:16

Thurs 21/5/15

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Interest Posts:

FTJ means 'For the juniors'

1) Music report3 presented by Dbg4thebest

2) What is best? logic humour Thanks Anika121, CPhill and Dbg4thebest

3) Fun with hemispheres Thanks zacismyname, Melody, CPhill and Nauseated

4) A little log manipulation Melody

5) A mystery to be solved by EinsteinJr Thanks Chris

6) Manipulating Trig Melody

7) Factoring - beware this is a very common error! (middle high level) Thanks CPhill

8) Last 2 digits of 5^2015 (continued) Thanks CPhill

9) Another circle puzzle from Civonamzuk Thanks Heureka

10) Difficult integration Melody

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 38 · 2015-05-21T12:29:05

Fri 22/5/15

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Interest Posts:

FTJ means 'For the juniors'

1) We are up and going again :)

2) Our points are all over the place again.

3) Rosala has been a member one year to the day! Thank you for your moving tribute Rosala

4) It appears the forums official games is underway - Rosala seems to have it all under control

5) team deciding

6) Rationalising the denominator and the importance of brackets Thanks Rosala, Zacismyname and Melody.

7) Physics (weight on inclined plane) not answered yet.

8) Another of Civonamzuk's circle specials Impressive answer CPhill

9) And another from Civonamzuk Impressive again Chris

10) Which digit will appear the least? (brainteaser from Thejamesmachine) FTJ+ Thanks CPhill and Anon

11) Angle of Depression Thanks Zacixmyname

12) How many sides does the regular polygon have? Thanks CPhill and Melody

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 39 · 2015-05-25T03:38:01

Tues 26/5/15

If you would like to comment on other site issues please do so on the Lantern Thread. Thank you.

Interest Posts:

FTJ means 'For the juniors'

1) Sigma notation for permutation question

2) A neat little equation Thanks Alan

3) Average speed (middle high level) Thanks CPhill

4) Factorizing quadratics with leading coeff >1 Thanks Zacismyname

5) GeoGebra tools Thanks Zacismyname and Alan

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 40 · 2015-05-26T09:14:06

Wed 27/5/15

If you would like to comment on other site issues please do so on the Lantern Thread. Thank you.

Interest Posts:

FTJ means 'For the juniors'

1) Puzzle (planks across a moat) by Civonamzuk Thanks CPhill

2) Puzzle (Find the odd ball out ) by Civonamzuk

3) Convert neg base 10 to binary Thanks Heureka

4) Direct and inverse variance Thanks Alan, CPhill and Melody

5) Time to drain a cylinder

6) Solve simultaneous equations by substitution Thanks Alan and Brodudedoodebrodude

7) Finding factors FTJ+ Thanks Thejamesmachine and anon

8) Time taken to drain a cylinder Thanks Alan

9) powers and logs Thanks CPhill and Melody

10) 17*24 no calculator FTJ Thanks Alan, Geno3141 and CPhill

11) Depreciation Thanks Melody and Brodude

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 41 · 2015-05-27T09:09:10

Thurs 28/5/15

If you would like to comment on other site issues please do so on the Lantern Thread. Thank you.

Interest Posts:

FTJ means 'For the juniors'

1) Maths homework / help sites Thanks MathsGod1 and Melody

2) Homework site "Mathopolis" review Thanks MathsGod1

3) Congratulations TitaniumRome

4) Who knew there were so many ways to find cot*sec? Thanks CPhill Geno and Heureka

5) Tricky trig limit Thanks Alan

6) Set notation Thanks Anon

7) Given the average and 3 scores find the 3rd score FTJ Thanks Anon

8) Solving a trigonometric equation Thanks Mathcad and CPhill

9) surface area of a cone, and √ Thanks DarkBlaze347, CPhill, DragonLance and Melody

10) Repeating decimals -what's the 4000th digit FTJ Thanks CPhill

11) Equating a log without a calc Thanks Geno3141

12) Find the equation of the circle Thanks CPhill and Heureka

13) Simultaneous Equations with trig Thanks Alan

14) Water down the drain (continued) Thanks Alan

15) Vertices of a 5 point star Thanks CPhill

16) Continuous growth Thanks CPhill

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 42 · 2015-05-28T01:12:08

Fri 29/5/15

If you would like to comment on other site issues please do so on the Lantern Thread. Thank you.

Interest Posts:

FTJ means 'For the juniors'

1) Why is there adverising beside the calculator? Melody

2) Music news report presented by Dbg4thebest Thank you

3) A very neat logic puzzle for all ages Thanks anon

4) Count the triangles puzzle for all ages Thanks Civonamzuk and Lunar and MG1

5) Determine the number puzzle Thanks Civonamzuk

6) Fourier Transform

7) Rates - Divide or multiply? Thanks thejamesmachine and Melody

8) Projectile motion Thanks Alan and Melody

9) Trig Intergral Advanced Thanks Alan

10) Line graph FTJ+ Thanks anon and CPhill

11) Convert base 8 to base 10 Thanks CPhill

12) Rotating axes Thanks Alan

13) Putting hyperbola in standard form Melody

14) Converting polar equ to Cartesian Thanks CPhill

There are a whole stack of the polar / cartesian questions on page 1815,

I have marked them with the ? icon

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 43 · 2015-05-29T01:04:18

Sat 30/5/15

If you would like to comment on other site issues please do so on the Lantern Thread. Thank you.

Interest Posts:

FTJ means 'For the juniors'

1) Music news Report #7 presented by Dbg4thebest. Thanks

2) An explanation of Stars and Bars probability technique Melody

3) Prime Factorization of 627 Thanks Thejamesmachine, CPhill and Alan

4) Converting a number to base 10 (there is a video clip) FTJ+ Thanks CPhill and Melody

5) How does mass affect weight? Thanks MathsGod1 and Melody

6) What does 2x mean FTJ Melody

7) Finding area of a quadrilateral - hard one Thanks Heureka

8) Great tricky question Thanks CPhill, Alan and anon

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 44 · 2015-05-30T10:04:04

Sun 31/5/15

If you would like to comment on other site issues please do so on the Lantern Thread. Thank you.

Interest Posts:

FTJ means 'For the juniors'

1) Finding area of a quadriateral - continued Thanks Heureka and Fiora

2) Tricky algebra expansion question - continued Thanks Heureka and CPhill, anon Alan and Nauseated.

3) How many squares will there be? Thanks CPhill and Heureka

4) Cubic puzzle for all

5) How to get 4L of water? Puzzle question for all Thanks CPhill

6) How can you get the photographers across the river safely Thanks CPhill

7) Making sense of a frequency histogram (good practice) Thanks CPhill

8) How much money was there ? Thanks CPhill

9) Dealing with indices Thanks Geno3141

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 45 · 2015-06-01T05:23:52

Tues 2/6/15

If you would like to comment on other site issues please do so on the Lantern Thread. Thank you.

Interest Posts:

FTJ means 'For the juniors'

1) Area question with segments Thanks Alan

2) Find perimeter of composite figure. Thanks CPhill

3) Conversion between km and miles. Thanks Radix, Melody and thejamesmachine

4) Limit Thanks Alan

5) Partial cats Thanks CPhill

6) Dilating a triangle Thanks CPhill and Melody

7) Trig limit Thanks Alan

8) Convert cartesian to polar form. Thanks CPhill

9) Dizzy, frizzy, Lizzie the wombat keeper. Melody

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 46 · 2015-06-02T02:35:22

Wed 3/6/15

If you would like to comment on other site issues please do so on the Lantern Thread. Thank you.

Interest Posts:

FTJ means 'For the juniors'

1) How many trees needed for the arc Thanks Alan

2) Finding the Nth term Thanks Alan and Melody

3) Compound interest Melody

4) How long wiill the projectile be air born? Thanks Alan

5) Basic probability Melody

6) Comparing marks FTJ Thanks NinjaDevo

7) Find width of prism FTJ Thanks NinjaDevo

8) Find the area of a circumscribed circle Thanks Alan

9) Eliminations in a circle (advanced) Thanks Bertie

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 47 · 2015-06-03T10:08:10

Thurs 4/6/15

If you would like to comment on other site issues please do so on the Lantern Thread. Thank you.

Interest Posts:

FTJ means 'For the juniors'

1) Eliminations in a circle continued (advanced) Thanks Bertie and Alan

2) Difficult equation with pronumeral exponent. Thanks Alan

3) Absolute value equation Melody

4) Order of opertions FTJ Melody

5) Simultaneous Equations Thanks DarkBlaze347

6) Subtraction in base 12 (More base question page 1834 and 1835) Thanks CPhill and Melody

7) Geometry word Problem Thanks Alan

8) Form a Parametric Equation representing motion (More on page 1836) Thanks CPhill

9) Determine vertical asymptote Thanks Brodudedoodebrodude

10) Convert from parmetric equ to cartesian equation (More on page 1835) Thanks CPhill

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 48 · 2015-06-04T02:56:18

Fri 5/6/15

If you would like to comment on other site issues please do so on the Lantern Thread. Thank you.

Interest Posts:

FTJ means 'For the juniors'

1) Non-linear simultaneous equations Melody

2) Polar and cartesian co-ordinates mix Thanks Alan

3) Solve a quadratic by completing the square. Thanks Alan

4) Calculus, find minimum area Thanks Alan and Melody

5) Simultaneous equations. Two circles Thanks Alan and CPhill

6) Order of operation FTJ Not answered - which child is going to answer it first

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 49 · 2015-06-05T01:52:37

Sat 6/6/15

If you would like to comment on other site issues please do so on the Lantern Thread. Thank you.

Interest Posts:

FTJ means 'For the juniors'

1) Algebra Equation - A bit tricky Thanks asinus and Alan

2) Co-ordinate geometry. Thanks for that great answer Chris

3) Finding the vertex of a parabola Thanks Alan and Melody

4) Finding numbers with a Ven diagram Thanks CPhill

5) Graphing a log function Thanks Alan and Melody

6) Lets count elephants! Thanks MathsGod1, Eloise1st and Melody

7) More maths help sites to try ** Thanks Eloise1st

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 50 · 2015-06-06T01:37:19

Sun 7/6/15

If you would like to comment on other site issues please do so on the Lantern Thread. Thank you.

Interest Posts:

FTJ means 'For the juniors'

1) Observation with Desmos calculator Thanks Dragonlance and Alan

2) Find maximum storage advanced Thanks CPhill

3) Integer addition FTJ Thanks asinus and Melody

4) This looks interesting - take a look at the link No answer yet

5) Factoring in pairs Melody

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 51 · 2015-06-07T03:21:40

Mon 8/6/15

If you would like to comment on other site issues please do so on the Lantern Thread. Thank you.

Interest Posts:

FTJ means 'For the juniors'

1) An unusual alternate base question. Melody

2) Another very unusual base question Melody

3) There are a lot of interesting different base questions on page 1843 AND 1844

Most are Mellie specials and some have not been answered yet. They are marked with "?" icons

4) Strange equation Advanced Not answered

5) Using Golden ratio Thanks Alan

6) Proof Advanced Not answered

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 52 · 2015-06-08T07:45:09

Tues 9/6/15

If you would like to comment on other site issues please do so on the Lantern Thread. Thank you.

Interest Posts:

FTJ means 'For the juniors'

1) Solving a cubic equation Thanks Heureka and Melody

2) Write recurring dec base 3 as fraction base 10 Thanks CPhill and Melody

3) Weird graph Thanks CPhill

4) Golden Rectangle. Thanks CPhill and Civonamzuk

5) Equation Thanks asinus, Melody and Heureka

6) Ratio Thanks CPhill and Heureka

7) sin^2(20)+sin^2(20) Thanks Radix and Melody

8) What is pi Thanks Raptor and Civonamzuk

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 53 · 2015-06-09T10:03:37

Wed 10/6/15

If you would like to comment on other site issues please do so on the Lantern Thread. Thank you.

Interest Posts:

FTJ means 'For the juniors'

1) Expected time for the monkey to get it right Thanks Alan

2) Pythagorean Theorem FTJ + Thanks Heureka

3) Algebra Addition FTJ + Thanks Alan

4) Tricky log question Not answered

5) Order of operation (great for practice) FTJ Anon and Melody

6) Another order of operation FTJ Thanks Geno

7) Dealing with negative indices (middle high) Thanks Heureka

8) Find percent increase (middle high) Thanks Alan

9) Counting question. Thanks CPhill and Heureka

10) Off or of ? Thanks TitaniumRome and Melody

11) Proof using modulus arithmetic Thanks Bertie

12) Basic simultaneous equation. Thanks Melody, Radix and Heureka

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 54 · 2015-06-10T11:56:26

Thurs 11/6/15

If you would like to comment on other site issues please do so on the Lantern Thread. Thank you.

Interest Posts:

FTJ means 'For the juniors'

1) How to remember formulas Thanks Badinage and Melody.

2) Modulo arithemtic continued Thanks CPhill and Bertie.

3) Algebraic Division Thanks CPhill

4) Tricky age question Middle high students should try this one Thanks CPhill

5) Theory behind functions and curve sketching (asymptotes and roots) Thanks CPhill

6) And another Thanks Melody, CPhill and Heureka

7) And another one, asyptotes, x and y intercepts Thanks CPhill and Heureka

8) Implicit Differentiation Thanks CPhill and Heureka

9) Breaking force Thanks Alan

10) Another circle puzzle presented by Civonamzuk Thanks CPhill

11) Average change in temperature FTJ Melody

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 55 · 2015-06-11T01:33:34

Fri 12/6/15

If you would like to comment on other site issues please do so on the Lantern Thread. Thank you.

Interest Posts:

FTJ means 'For the juniors'

1) Experiment relating to Infinite Monkey Theorem. Thanks LancelotLink

2) Modulo arithmetic continues to continue Thanks Heureka

3) Inscribed Golden Rectangles - Continued Thanks Heureka and CPhill

4) Finding the height of a cone Thanks anon and Melody

5) Find the area of a triangle Thanks CPhill

6) Biased and unbiased surveys Melody

7) Max area of inscribed Kepler triangle Fiora and Heureka

8) Energy needed to heat water Thanks Alan

9) Trig identity Melody

10) Another trig equation Thanks CPhill and Melody

11) Find the wavelength of a beam of light Thanks Heureka and Melody

12) If the calc says infinity and you know it's no, what can you do? Thanks Chris and Melody

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 56 · 2015-06-12T01:57:10

Sat 13/6/15

If you would like to comment on other site issues please do so on the Lantern Thread. Thank you.

Interest Posts:

FTJ means 'For the juniors'

1) Trig equation continued (hard one) Thanks Alan and Heureka

2) A temperature contraversy Thanks Alan, Civonamzuk and Dragonlance

3) Finding a percentage FTJ Thanks Alan anon and Melody.

4) Age, squares and cubes Thanks anon

5) Ellipse Thanks CPhill and Melody

6) Find centre and radius of a circle Thanks Alan and Melody

7) How many people must have everything? Not answered ?

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 57 · 2015-06-15T08:50:09

Tues 16/6/15

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Interest Posts:

FTJ means 'For the juniors'

1) What is the minimum number of people? Thanks Alan

2) Product of two vectors in polar form Thanks Alan and Bertie

3) Fractional and negative indices Thanks Radix and Melody

4) Simultaneous equations Middle high level Thanks Pyramid

5) Close estimation for a huge number Melody

6) Graphing translation Thanks CPhill

7) Fraction division FTJ Thanks CPhill

8) Equations with indicies Thanks CPhill

9) Hyperbola question 1 Thanks Melody and Heureka

10) Hyperbola question 2 Thanks Melody and Heureka

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 58 · 2015-06-16T12:36:36

Wed 17/6/15

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Interest Posts:

FTJ means 'For the juniors'

1) What is an inverse - GeoGebra and WolframAlpha links. Thanks Radix

2) Which is cheaper? FTJ+ Thanks Syllogist

3) Simultaneous equations Substitution method Thanks Heureka

4) Can we tell if a triangle is right angled? Thanks CPhill

5) 3D pythagoras. Something for juniors to think about. Thanks CPhill

6) Backward Euler's Method Advanced Thanks Alan

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 59 · 2015-06-17T09:00:33

Thurs 18/6/15

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Interest Posts:

FTJ means 'For the juniors'

1) Worded Simultaneous Equation Thanks Alan

2) Recursive function Thanks anon and Alan

3) How can i remember formulas Thanks Alan and Melody

4) Equation solving with exponents Thanks Alan

5) Equation - hard year 10 level Thanks CPhill

6) Logic with rates FTJ+ Thanks CPhill

7) Find the height of a triangle Thanks anon and CPhill

8) Arithmetic sequence Thanks CPhill and Heureka

9) Simplifying indices Thanks Heureka

10) Functions and imaginary numbers Thanks Alan and Heureka

11) Integration Thanks Melody and Heureka

12) Subtraction using complements Thanks Alan (this is easy but really weird)

13) Indices question (very unusual) Melody

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 60 · 2015-06-18T03:25:15

Fri 19/6/15

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Interest Posts:

FTJ means 'For the juniors'

1) How to calculate square root by hand? Thanks CPhill and Civonamzuk.

2) Continuous Time Markov Chain Thanks Alan

3) Irrational no. * rational no. = ? Thanks CPhill, Headingnorth and Alan

4) Gradient of a line through 2 points Thanks CPhill and heureka

5) Angles on parallel lines Z , C , and F Thanks anon and Melody

6) Puzzle FTJ Thanks anon and Melody

7) Equation - 2 quite different solutions Thanks anon and Melody

8) Equation to solve - good practice. Thanks Heureka

9) Ratio problem Thanks Alan

10) Will the pilot get home? Thanks CPhill and Melody

11) Inverse trig integral Thanks Syllogist and Melody

12) Difficult quadratic equation Thanks Syllogist, Heureka and Melody

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 61 · 2015-06-19T09:23:56

Sat 20/6/15

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Interest Posts:

FTJ means 'For the juniors'

1) Ratio Problem Continued Thanks Alan, CPhill and Civonamzuk

2) Trig integration Continued Thanks Syllogist, Melody. CPhill, Alan and Heureka

3) Trig integration2 Continued Thanks Heureka and Melody

4) Difficult fraction equation Thanks Radix, Melody Alan

5) Statistics - Confidence interval Thanks Alan

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 62 · 2015-06-20T01:50:47

Sun 21/6/15

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Interest Posts:

FTJ means 'For the juniors'

1) Interactive practice page for gradient FTJ Thanks Radix

2) Interactive practice for number plane coordinates Thanks Radix

3) Stacks of bricks FTJ Thanks Sir-Emo-Chappington

4) Calculus - Find maximum volume Melody

5) Trig proof (I am not sure what is wanted) Melody

6) Why is one answer discarded? Melody

7) Inequality and a new graphing program Thanks Sir-Emo-Chappington and Melody

8) Simplifying horrible algebraic fractions Melody

9) Multiple Choice - order of operation LOL Thanks Sir-Emo-Chappington, Alan and Melody

10) Trig equations in polar form Thanks Melody and Alan

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 63 · 2015-06-21T12:16:00

Mon 22/6/15

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Interest Posts:

FTJ means 'For the juniors'

1) Basic 2 step equation FTJ Melody

2) Base 10 to base 16 Thanks Melody and Sir-Emo-Chappington

3) Interpreting stem and leaf plot Thanks Sir-Emo-Chappington

4) Stats proof Thanks Brodude...

5) A difficult limit Thanks Alan

6) Trigonometry equation Thanks CPhill and Melody

7) Order of operation FTJ+ Melody

8) Counter proof - by example Thanks Alan

9) GP and simultaneous equation Thank Alan

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

Melody · Answer 64 · 2015-06-22T10:43:06

Tues 23/6/15

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Interest Posts:

FTJ means 'For the juniors'

There were too many good questions to list them all seperately, I have put a "?" icon in the left margin of the choice questions. (Some are listed individually as well)

1) Page 1877 - Lots of great questions posted by Mellie

2) Page 1878 - More great questions - Some are Calculus

3) How old am I ? FTJ Thanks MathsGod1 and TitaniumRome

4) A difficult limit Continued Thanks Alan

5) Tricky multiple problem (A Mellie special) Melody

6) Sum of reciprocals (A Mellie special) Thanks Alan

7) Hard trig integrals Thanks Melody, Alan and Heureka

8) Second hard trig integral Thanks Alan

9) Functions and algebraic GCD Thanks Alan

10) Find one trig ratio when given another. Thanks Alan

11) Trig expressions Thanks Alan

12) Remainders when dividing by 11 FTJ+ Thanks Heureka