Melody

921 Questions
34315 Answers

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Mathigon website

I just discovered a site called mathigon

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

Melody Apr 2, 2022

-8

609

1

+118725

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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8

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+118725

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

871

3

+118725

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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889

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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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996

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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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1091

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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

+118725

+5

http://web2.0calc.com/questions/how-do-i-type-in-fractions

Look here for a more comprehesive answer.

MelodyJun 18, 2014

+118725

+5

(6^7*6^3/6^5*6^2)^2

$$\left(\frac{6^7*6^3}{6^5*6^2}\right)^2\\\\
=\left(\frac{6^{10}}{6^7}\right)^2\\\\
=\left(6^3 \right)^2\\\\\
=6^6$$

$${{\mathtt{6}}}^{{\mathtt{6}}} = {\mathtt{46\,656}}$$

MelodyJun 18, 2014

+118725

+5

The reason that you do not like mine is that I have not worked out the annual rate. And this is upsetting to some people. What i would like to see is the setting out to show that Morgan Tud's answer is correct (as I have done with mine). When I am shown that I am wrong I am always happy to accept it.

I am reasonably confident that my own answer is correct.

Morgan Tud has given an annual interest rate I am not sure if he has given any others. If i get time I will play with his answer as i have done with my own.

MelodyJun 18, 2014

+118725

+5

I only just used Google to find out what Kool-aid is! I learn something every day!

MelodyJun 18, 2014

+118725

+5

If sin(theta)=0.567

then

theta=asin(0.567)

arc sine is the same as inverse sine

MelodyJun 18, 2014

+118725

+5

-8x^3+6x^2

MelodyJun 18, 2014

+118725

0

Thank you Natasza,

I don't think that i have answered any of your questions yet but we all try hard to help people and it is really nice when people show their appreciation!

MelodyJun 18, 2014

+118725

+5

Hi anonymous4338

We only just had this one

http://web2.0calc.com/questions/3-men-went-to-a-hotel-to-rent-a-room-the-cost-of-the-room-was-30-each-man-paid-10-to-the-bellboy-and-proceeded-to-there-room-after-a-li

see. But thank you anyway.

MelodyJun 18, 2014

+118725

0

Hey Dragan and Orstein,

Welcome to Web2.0calc forum, I see that you are already enjoying yourselves here. With some luck maybe you can learn something as well.

Dragon, your avatar would have to be one of the 'coolest' on the forum!

MelodyJun 18, 2014

+118725

0

Wednesday 18/6/14

Pokemonfan58 has solved our number puzzle andposted a new one!

http://web2.0calc.com/questions/number-challenge-for-everyone-1#r112

Reinout has decided when need a Lunch box unwrap. He appears to have his lunch VERY late in the day!

http://web2.0calc.com/questions/lunch-box-unwrap

I really like the 'proof' in this one - Thanks Reinout-g

http://web2.0calc.com/questions/begin-of-lunch-box-unwrap_2

There is some considerable disagreement happening here!

http://web2.0calc.com/questions/perpetuity_1

Relatively simple probability question

http://web2.0calc.com/questions/in-how-many-ways-can-6-graduates-line-up-to-receive-their-diplomas-if-there-are-4-girls-and-2-boys-and-the-girls-will-receive-their-diplomas

I haven't had a chance to look at these geometry questions but they do look interesting.

http://web2.0calc.com/questions/can-anyone-do-numers-8-and-10-and-14

limits

http://web2.0calc.com/questions/how-do-i-solve-this-limit-lim-x-0-2-x-x

MelodyJun 18, 2014