Melody

921 Questions
34315 Answers

+1

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Mathigon website

I just discovered a site called mathigon

https://mathigon.org/dashboard
read more ..

Melody Apr 2, 2022

-8

606

1

+118724

Reporting problems.

There are a number of people having problems at the moment.
If you lodge an error can you please give all relevant information that you can think of.
Where you are in the world - the city or the country - is often very important information. read more ..

Melody Mar 16, 2022

-2

8

1459

5

+118724

How to make an empty rectangle in Latex

I just worked out how to make an empty box of various horizonal size easily in LaTex.
This is not a recommended method, but other methods that I have tried here have not worked.
This coding is really simple. Just put letters inside read more ..

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Melody Mar 15, 2022

-3

869

3

+118724

HAPPY ANNIVERSARY CHRIS! (CPhill)

I just realized that you became a member here exactly 8 years ago today!

It has been great to have you here all that time

off-topic

Melody Mar 13, 2022

-4

846

3

+118724

WELCOME BACK CPHILL !

Melody Feb 11, 2022

-5

716

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+118724

Very interesting question. No high level maths required.

This question was posted a couple of days ago.
https://web2.0calc.com/questions/geometry_73561

I think it is really interesting. It looks much more difficult than it really needs to be. read more ..

Melody Feb 1, 2022

-7

885

11

+118724

Members have a better experience. Their questions get more attention.

Almost everyone is posting as a guest.
If you post as a member your questions will have a far greater chance of a timely and helpful response.
If you are a genuine learner and interact with us, you will become known and answerers will do read more ..

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Melody Jan 9, 2022

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993

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+118724

HAPPY BIRTHDAY CHRIS!

Melody Dec 20, 2021

+5

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+118724

Some guidelines for question askers.

Please note:
1) Ask only one question per post.
2) When asking a question talk about what you have tried for yourself. Then people will take you more seriously and will be more able and willing to help.
3) If you get an answer read more ..

off-topic

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Melody Nov 4, 2021

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1089

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Remeniscing - a little historical humour.

I just found this old post that some of you, who have been around for a while, might find amusing.

https://web2.0calc.com/questions/look-at-the-new-leader-board

off-topic

Melody Oct 29, 2021

+118724

+11

I can see a problem happening here.

Social posts should not attract a lot of points.

If you give each other large quantities of points for your chatter it will cause a lot of resentment with all serious members of the forum. Chatter and exchange ideas by all means but do not give points for it!!

Perhaps you can use some other token of appreciations.

EinsteinJr uses cookies.

Here is an award idea. (It is just an idea )

MelodyMay 20, 2015

+118724

+10

Mmm,

lets see

$$\begin{array}{rrlll}\\-6x+4&=&-2\qquad&(-4\;to\;get\;X\;alone)\\\\
-6x\textcolor[rgb]{1,0,0}{+4}-4&=&-2-4 &\textcolor[rgb]{1,0,0}{\mbox{You still need the +4 here because you have not cancelled it out yet} }\\\\
-6x&=&-6\\\\
etc
\\\\
\end{array}$$

MelodyMay 20, 2015

+118724

+5

@@ End of Day Wrap Tues 19/5/15 Sydney, Australia Time 12:11am (Wed really) ♪ ♫

Hi everyone,

Answer credits today go to: Radix, Andrew1714, ShadowBolt04, MathsGod1, Heureka, Geno3141, Alan, DarkBlaze347, Zacismyname, CPhill, Kitty<3, Joro1144, Heureka, Callum and CowgirlAMS. Thanks for all those great answers.

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 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 ♬ ♬ ♫♪ ♪ ♫

MelodyMay 20, 2015

+118724

0

Yes Alan, that is quite possible - I am in The Flat Earth Society too!

It seems that the youngsters have their 'Music Society' and us oldies (no offence Heureka) have the 'Flat Earth Society'

$$Zero$$ oh! I mean $$Ze^gro^{es}$$ could have fun with this :)

MelodyMay 20, 2015

+118724

0

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 ♬ ♬ ♫♪ ♪ ♫

MelodyMay 19, 2015

+118724

+8

Inverse sine is the same as arc sine

So on this calc use [2nd] [asin]

MelodyMay 19, 2015

+118724

+5

$$\\3log_2(x)-[log_2(3)-log_2(x+4)]\\\\
=3log_2(x)-log_2(3)+log_2(x+4)\\\\
=log_2(x^3)-log_2(3)+log_2(x+4)\\\\
=log_2\;\frac{x^3(x+4)}{3}\\\\$$

I am not sure if that is what you wanted :/

MelodyMay 19, 2015

+118724

0

Yes, you said it !!!

My royal ego will explode :D

MelodyMay 19, 2015

+118724

0

It is answered on the original thread - that is where the question is!

Heureka and I both answered it :)

MelodyMay 19, 2015

+118724

+8

YES that is true :)

MelodyMay 19, 2015