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

You are not logged in.

#1 Dark Discussions at Cafe Infinity » Happy Fibonacci Day » Yesterday 10:44:35

MathsIsFun
Replies: 2

November 23rd => 1,1,2,3

(But the sequence actually starts at 0)

Leonardo Pisano Bogollo, as well as being famous for the Fibonacci Sequence, helped spread Hindu-Arabic Numerals through Europe in place of Roman Numerals.

#4 Maths Is Fun - Suggestions and Comments » Scalar Vector Matrix » 2014-11-19 12:41:01

MathsIsFun
Replies: 3

A page to help clear up any confusions people may have about Scalars Vectors and Matrices.

Corrections, suggestions please!

#5 Re: Maths Is Fun - Suggestions and Comments » First Digits Rule (Benford's Law) » 2014-11-19 09:17:33

I decided to add a section on the worn logarithm book, and found that Simon Newcomb actually discovered that!

See my revised version (use refresh): First Digits Rule

#7 Re: Maths Is Fun - Suggestions and Comments » First Digits Rule (Benford's Law) » 2014-11-18 12:26:22

Yes I heard that one too, and find it a fascinating example of how some people can notice things and go on to discoveries. But trying to explain what a log table is seemed a little hard for this page.

#10 Re: Maths Is Fun - Suggestions and Comments » Set Symbols » 2014-11-17 21:57:10

Great, will add : and define a Universal Set for the Complement example.

#11 Re: Maths Is Fun - Suggestions and Comments » Set Symbols » 2014-11-17 18:46:02

Has anyone else seen I used for irrationals?

#13 Maths Is Fun - Suggestions and Comments » Set Symbols » 2014-11-17 12:10:43

MathsIsFun
Replies: 11

A new page: Set Symbols

What do you guys think of it? Any mistakes?

#15 Re: Maths Is Fun - Suggestions and Comments » Weird Emails from funmath@gmail.com » 2014-11-16 18:11:14

Probably alerting you to subscriptions, but being blank means that something is not well configured. Hmmm.

#17 Re: Maths Is Fun - Suggestions and Comments » Math vs Maths ... and more » 2014-08-11 23:26:49

chooipian wrote:

Standard Form and Scientific Notation?

Thanks, will add.

bobbym wrote:

...what do they use for the other two? Boiled Or Denatured Makes Alcohol Sweeter? ...

Funny! But a good point, it would be nice to have one for BODMAS and BEDMAS.

#18 Maths Is Fun - Suggestions and Comments » Math vs Maths ... and more » 2014-08-11 16:57:11

MathsIsFun
Replies: 7

A new page: Math vs Maths ... and more

Good page? Any mistakes? Do you have your own thoughts on this?

And any more examples for the second half would be appreciated.

#19 Re: Maths Is Fun - Suggestions and Comments » some things lost after the upgrade » 2014-08-07 11:48:35

Hi Bob,

Thanks for that, I will look into how I might be able to repeat the tabs in this version.

I think imgur (or the like) is the best solution for image hosting at the moment.

#20 Maths Is Fun - Suggestions and Comments » The Lottery » 2014-08-07 11:46:49

MathsIsFun
Replies: 3

Every so often we get people asking lottery type questions, so I thought I would make a page to try to help them understand how chance works etc.

Here is my draft: The Lottery

I would value your feedback, any mistakes you may find, and any suggestions for inclusions.

#21 Re: Maths Is Fun - Suggestions and Comments » Homogeneous Differential Equations » 2014-07-04 23:09:31

Thanks bobby ... yes and yes: ±√(2x^2+c) − x is what I get now.

#22 Maths Is Fun - Suggestions and Comments » Homogeneous Differential Equations » 2014-07-04 11:38:53

MathsIsFun
Replies: 4

And another in the Diff Eq series: Homogeneous Differential Equations

The main weakness in this page is no explanation of why they are "Homogeneous". I played with linking f(zx,zy) = z^n f(x,y) to dy/dx=F(x/y) form but failed. If anyone knows a user-friendly way of explaining why "Homogeneous" that would be nice.

Comments, suggestions and error checking welcome.

#23 Re: Maths Is Fun - Suggestions and Comments » Solution of First Order Linear Differential Equations » 2014-07-04 11:10:12

Les is going to make some questions (with worked answers) for the bottom of the page.

#25 Re: Maths Is Fun - Suggestions and Comments » Separation of Variables » 2014-07-03 22:27:04

Have made changes to the page Separation of Variables

Is it looking better now? Did I miss any of your points in the rewrite?

Board footer

Powered by FluxBB