Melody

921 Questions
34316 Answers

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Mathigon website

I just discovered a site called mathigon

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

Melody Apr 2, 2022

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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

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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

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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

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WELCOME BACK CPHILL !

Melody Feb 11, 2022

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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

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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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HAPPY BIRTHDAY CHRIS!

Melody Dec 20, 2021

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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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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

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Actually Tetration that is a good idea but it would take a lot of effort and time to get it well organised.

Last year NinjaDevo organised the "Reference Material" and "Great answers to Learn From" He did a great job, I continue to be very grateful to him.

If you ever want to tackle the puzzles that would be great but I am not tryingto pressure you.

Have a think about it. Get back to me if you are interested.

MelodyJan 17, 2015

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Sun 18/1/15

1) This is why people must learn to use brackets properly. Thanks Tetration and Melody

http://web2.0calc.com/questions/how-do-i-solve-this-z-6x-3-z-4x-5-it-is-asking-to-simplify

2) Arithmetic sequence problem. [recommended by Chris] Thanks Chris

http://web2.0calc.com/questions/let-nbsp-nbsp-nbsp-nbsp-be-an-arithmetic-sequence-if-nbsp-nbsp-and-nbsp-then-find-nbsp#r1

3) This sum of subsets looks interesting. [recommended by Chris] Thanks Chris and Geno

http://web2.0calc.com/questions/please-help_66#r2

4) I liked this variation on a standard trig question. Thanks anon for the question and Geno for the answer.

http://web2.0calc.com/questions/a-plane-flies-on-a-bearing-of-065-for-200km-how-far-east-has-it-gone

5) An annoying unsolved question. Arithmetic progression.

http://web2.0calc.com/questions/penn-writes-a-2013-term-arithmetic-sequence-of-positive-integers-and-teller-writes-a-different-2013-term-arithmetic-sequence-of-integers-t

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

MelodyJan 17, 2015

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Your command is my pleasure?

Your command is my duty?

I don't know, what are you going for here Rosala?

Thanks for fixing it - I gave you the points. :))

MelodyJan 17, 2015

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You are a good friend Rosala (to Dragonlance) BUT also to me :)

I was wondering about Dragonlance. He has never posted anything before. Is he shy?

Are you shy Dragonlance? Welcome to web2 forum.

(Ws don't bite, you can ask questions if you want to but maybe Rosala answers them all in PMs.

Anyway, Happy Birthday. I hope that you have a really good day

MelodyJan 17, 2015

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What Tetration said is completely correct. YOU MUST USE BRACKETS.

Otherwise we do not know what your intended answer is!!

MelodyJan 17, 2015

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Tetration and I have interpreted your question differently. To tell you the truth either of us interpreted it as it tecnically should have been interpreted.

Technically this is correct.

z^6x^3/z^4x^5

$$\\z^6\times \dfrac{x^3}{z^4}\times x^5\\\\\\
=\dfrac{z^6*x^3*x^5}{z^4}\\\\\\
=\dfrac{z^2*x^8}{1}\\\\\\
=z^2*x^8\\\\
=z^2x^8$$

MelodyJan 17, 2015

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$$\\\dfrac{z^6x^3}{z^4x^5}\\\\\\
=\dfrac{z^{6-4}}{x^{5-3}}\\\\\\
=\dfrac{z^{2}}{x^{2}}\\\\\\$$

MelodyJan 17, 2015

+118735

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What is 9x+3x ?

Fix up your answer and I will be very happy to award you the points :)

MelodyJan 17, 2015

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I think that you made a little error Rosala?

MelodyJan 17, 2015

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@@ End of Day Wrap Sat 17/1/15 Sydney, Australia Time 7:20pm

Hi all,

Great answer today from Heureka, Alan, geno3141, Mathematician, CPhill, flflvm97 and Tetration. Thank you.

Here is a suggestion that may help some people keep a track of the threads that they want to follow.

http://web2.0calc.com/questions/a-suggestion-for-casual-answerers

I also rearranged the puzzles today so they are all in one sticky topic.

Interest posts:

1) End you day with a laugh. Thank you Rosala, we always love your laughs

http://web2.0calc.com/questions/end-your-day-with-a-laugh

2) Fun with numbers - Suitable for everyone Thanks Chris.

http://web2.0calc.com/questions/fill-in-the-appropriate-operation-signs-nbsp-times-divide-radic-to-make-the-following-sentances-true

3) Log of complex number. All too much for me. Thanks Alan and Heureka.

http://web2.0calc.com/questions/ln-10-75-6-98i#r3

4) What is a geometric mean. Thanks Geno

http://web2.0calc.com/questions/what-is-geometric-mean_1

5) Using a table of values with Desmos graphing calculator. Thanks CPhill

http://web2.0calc.com/questions/13-model-the-function-rule-y-2x-3-with-a-table-of-values-show-your-work-y-2x-3

6) A look at some Trig Thanks to CPhill and Melody

http://web2.0calc.com/questions/i-have-solved-the-equation-2cos-theta-sin-theta-cos-theta-where-0-2-pi-and-got-the-solutions-pi-2-pi-6-but-my-math-textbook-has-p

7) Chris and I having a laugh.

http://web2.0calc.com/questions/how-do-you-write-an-equation-for-5-4-and-4-3

Enjoy your weekend

♫♪ ♪ ♫ ♬ ♬ MELODY ♬ ♬ ♫♪ ♪ ♫

MelodyJan 17, 2015