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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,626

Made this (repurposed the Function Grapher): Inequality Grapher

How is it?

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 105,272

Hi MIF;

Look like a really nice grapher. Very good.

How about adding the capability for 1 or 2 more equations.

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.****No great discovery was ever made without a bold guess. **

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**ganesh****Moderator**- Registered: 2005-06-28
- Posts: 21,312

Hi MathsIsFun,

The Inequality Grapher works very well!

Remarkable page!

It is no good to try to stop knowledge from going forward. Ignorance is never better than knowledge - Enrico Fermi.

Nothing is better than reading and gaining more and more knowledge - Stephen William Hawking.

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**bob bundy****Moderator**- Registered: 2010-06-20
- Posts: 7,651

Hi MathsIsFun,

Love it. Really useful!

Bob

Children are not defined by school ...........The Fonz

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

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**ShivamS****Member**- Registered: 2011-02-07
- Posts: 3,648

Very nice!

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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,626

Thanks Guys!

It should be possible to add more equations, I just need to do some tricky coding is all.

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 105,272

Hi;

When you succeed it will be easy to create a graphic linear programming solver.

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.****No great discovery was ever made without a bold guess. **

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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,626

Almost there ... is 3 enough? 4?

"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 105,272

Hi MIF;

I was thinking of 4. If 4 is possible then 4 is good.

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.****No great discovery was ever made without a bold guess. **

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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,626

4? You want 4? I think 4 is possible. 4 should definitely be possible. I will try for 4.

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 105,272

Hi MIF;

4 would be good.

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.****No great discovery was ever made without a bold guess. **

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This applet is really good. Never seen such a web resource before

'God exists because Mathematics is consistent, and the devil exists because we cannot prove it'

I'm not crazy, my mother had me tested.

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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,626

4? Was it 4 you wanted? Better than 4, I give you **n**: Inequality Grapher

(Use the +/- buttons below the y= ... and do a refresh if you can't see them.)

Hopefully I haven't wrecked it in the process, but I am sure you will all let me know if it still works nicely

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**bob bundy****Moderator**- Registered: 2010-06-20
- Posts: 7,651

**Oh Joy!**

Bob

Children are not defined by school ...........The Fonz

You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei

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**bobbym****Administrator**- From: Bumpkinland
- Registered: 2009-04-12
- Posts: 105,272

Axiom:More is better.

n is greater than 4 when n>4. This can be proved by induction. So, n is better than 4 when n>4. I am happy.

Worked on a whole bunch of linear programming problems and obviously could work on quadratic programming too.

Future suggestions:

How about showing the coordinates of the feasible points?

Depending on how you solved the problem this could be a hanger or it could be difficult.

All in all, very good work!

**In mathematics, you don't understand things. You just get used to them.****If it ain't broke, fix it until it is.****No great discovery was ever made without a bold guess. **

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**MathsIsFun****Administrator**- Registered: 2005-01-21
- Posts: 7,626

Love the screenshot!

Points: I can't think of a point-finding algorithm. But you can use the "Points" button and zoom in for more accuracy.

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**ShivamS****Member**- Registered: 2011-02-07
- Posts: 3,648

Great work!

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