Math Is Fun Forum
  Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

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#3 Re: Maths Is Fun - Suggestions and Comments » Gravity » 2016-04-16 13:34:21

I was thinking of a popup edit screen, one line per object, with mass, x and y position and velocity magnitude and direction (0-360 degrees). The animation would pause while editing. Can also delete a particle.

#4 Maths Is Fun - Suggestions and Comments » Gravity » 2016-04-13 17:52:15

MathsIsFun
Replies: 7

A new page on Gravity

Would value your feedback.

Any ideas on how to best present space-time curvature will be welcome!

Also help in tightening up the wording is welcome, too.

#7 Maths Is Fun - Suggestions and Comments » Force » 2016-03-25 15:22:19

MathsIsFun
Replies: 3

A new page: Force

Comments and suggestions please!

#9 Re: Dark Discussions at Cafe Infinity » Forum Dead? » 2016-03-20 10:01:01

With the rise of social media people spend a lot of time on Facebook, Twitter, Instragram, Snapchat. They are the online version of sports stadiums and shopping malls.

We are more like a Parisian Cafe. We have our regulars, who can often be seen dining here and discussing with their friends, and also people who just pop in for a coffee or pastry.

#12 Re: Maths Is Fun - Suggestions and Comments » Has the Flood Limit been Disabled? » 2016-01-11 08:33:08

Should be good now.

If we didn't have this there would be a stream of spam posts a mile long every day. Imagine we have a bouncer outside who sometimes won't let regulars in because they aren't dressed right.

#13 Re: Maths Is Fun - Suggestions and Comments » Has the Flood Limit been Disabled? » 2016-01-07 10:27:57

The server was overwhelmed for about 5 hours, I don't know the cause. Looks all fine now.

#14 Re: Maths Is Fun - Suggestions and Comments » Arc Length » 2016-01-06 19:40:49

"As cunning as a fox who's just been appointed Professor of Cunning at Oxford University?"

#15 Re: Maths Is Fun - Suggestions and Comments » Arc Length » 2016-01-05 15:10:52

Oh yeah, that is kind of scrambled, thanks.

#16 Maths Is Fun - Suggestions and Comments » Arc Length » 2016-01-05 11:18:02

MathsIsFun
Replies: 5

Just finished this page: Arc Length (Calculus)

Comments, suggestions please smile

#17 Re: Maths Is Fun - Suggestions and Comments » Chi-Square Test » 2015-12-29 12:04:48

Thanks guys!

bobbym - did you compare {900,1100,1200,1000,900,900} to {1000,1000,1000,1000,1000,1000} ? Otherwise Chi-square is 0 (and DF 0 also)

If so I get a Chi-square of 38.7332 and p = 2.68247e-7 , which is quite cool as it shows that to be a very expected result.

So, we can agree here to give them honorary categories of test1 to test6 and random vs boring.

#18 Maths Is Fun - Suggestions and Comments » Chi-Square Test » 2015-12-28 15:35:27

MathsIsFun
Replies: 5

Have finished Chi-Square Test and Chi-Square Calculator

Please cast your eyes over them both, and let me know any errors or improvements so visitors get the best possible experience.

#20 Re: Maths Is Fun - Suggestions and Comments » Confidence Interval Calculator » 2015-11-19 11:24:48

Thanks ganesh and bobby.

I hard code the "Z" values, so can't give open choice.

#21 Maths Is Fun - Suggestions and Comments » Confidence Interval Calculator » 2015-11-18 09:45:40

MathsIsFun
Replies: 4

Made a Confidence Interval Calculator: Confidence Interval Calculator

Are the results (and wording) correct?

#22 Maths Is Fun - Suggestions and Comments » Confidence Intervals » 2015-11-17 15:23:14

MathsIsFun
Replies: 2

A new page for you guys to review: Confidence Intervals

Please let me know any errors or omissions. Or any good ideas you have.

#24 Maths Is Fun - Suggestions and Comments » Bayes' Theorem » 2015-11-13 14:52:29

MathsIsFun
Replies: 5

A draft of a new page: Bayes' Theorem

Please look over it for accuracy, etc, before I release it generally,

Also let me know if you can think of improvements

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