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#51 2011-09-10 04:20:33
- bobbym
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Re: Implicit Equation Grapher
Here is a nice one.
Almost produces a sawtooth.
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.
#52 2011-09-10 08:18:09
- MathsIsFun
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Re: Implicit Equation Grapher
Nice. As a link: Plot of e^(cos(x))-e^(sin(x))
"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman
#53 2011-09-11 05:39:13
- bobbym
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Re: Implicit Equation Grapher
Almost a box!
exp((x^2-16)(x-0)^2)+(y^2-20)^3=0
Making use of the probably spurious vertical lines almost produces a box.
Hi MIF;
How did you get it to output a link?
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.
#54 2012-05-01 12:05:43
- Sumasoltin
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Re: Implicit Equation Grapher
Hi,MathsIsFun;
You've got a wonderful idea! But I have to say that someone did have the same idea and he made an wonderful grapher called GrafEq. But unfortunatly, the function of graphing has been out of time, so it's only for win6 or winXP.
He is Jeff Tupper, and he found the super inequality bellow. Why super? Its graph contains itself where 0<=x<=105 and n<=y<=n+16 ! n=96093937991895888497167296212785275471500433966012930665150551927170280239526642
46896428421743507181212671537827706233559932372808741443078913259639413377234878
57735749823926629715517173716995165232890538221612403238855866184013235585136048
82869333790249145422928866708109618449609170518345406782773155170540538162738096
76025656250169814820834187831638491155902256100036523513703438744618483787372381
98224849863465033159410054974700593138339226497249461751545728366702369745461014
655997933798537483143786841806593422227898388722980000748404719
As expected, this grapher has bugs, too.It allows x/0=0, x^(1/3)¡Ý0. It is the same problem of f(x,y)≈0 that you faced with.
Why not share your commands? Let's do this wonderful project together ! Many friends of mine and I want to improve it after our Chinese University Enterance Exam.
I've got a Jeff Tupper's paper about this, would you like to read ?
Last edited by Sumasoltin (2012-05-01 12:08:17)
#55 2012-05-01 12:20:15
- Sumasoltin
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Re: Implicit Equation Grapher
There are some amazing graph made by it.
In China, we use "NB" to show admiration and "great", so I found the "NB equation", NB equation, NB plot, and NB grapher. 
#56 2012-05-01 17:21:25
- bob bundy
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Re: Implicit Equation Grapher
hi Sumasoltin
Definiely NB. the last one especially 
Bob
You cannot teach a man anything; you can only help him find it within himself..........Galileo Galilei
#57 2012-05-01 19:26:24
- MathsIsFun
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Re: Implicit Equation Grapher
Hi Sumasoltin,
Working with someone on the project sounds great. But right now I am deep into another project.
"The physicists defer only to mathematicians, and the mathematicians defer only to God ..." - Leon M. Lederman
#58 2012-05-02 01:48:16
- Sumasoltin
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Re: Implicit Equation Grapher
MathsIsFun wrote:
I am so glad everyone likes it!
Some really wild equations, too
An example of where it goes wrong is bobby's "x^2*cos(x)=y*tan(y)" ... I don't believe the horizontal straight lines should be there at +/-π/2, they are an artifact of tan(y) changing sign, so the program assumes there is a zero in there.
The program has no way of knowing that the magical zero point is undefined. Any ideas on how to solve this?
A simpler example is "1/(1+x)=y"
Well, my stratege is finding out "/" to "remind" the program where it shouldn't show a blue point. Just plot a white line over it ! GrafEq has this trouble too and I use this way to hide the "patches". Another thing I want to say is that why not blod the plot so points-plot can be shown well?
#59 2012-05-02 02:03:52
- Sumasoltin
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Re: Implicit Equation Grapher
bobbym wrote:
Hi MathsisFun;
How about a color chooser for different colored graphs. Maybe the ability to graph 2 or more equations.
You could also add the best graph on this thread to the list of examples. So far, phrontister's dragonfly ( post # 33 ) get's my vote.
Aaa...Where's the dragonfly ?
#60 2012-05-02 04:53:47
- anonimnystefy
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Re: Implicit Equation Grapher
I am posting the image again,because your tag didn't convert for some reason.
Last edited by anonimnystefy (2012-05-02 04:55:43)
The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“A secret's worth depends on the people from whom it must be kept.” ― Carlos Ruiz Zafón
#61 2012-05-02 06:47:02
- bobbym
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Re: Implicit Equation Grapher
Hi Sumasoltin;
You left out the http:\\ so the img tags did not work.
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.
#62 2012-05-02 07:57:08
- anonimnystefy
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Re: Implicit Equation Grapher
Try (y-(sin(log(x)))/(log(sin(x))))(y+(sin(log(x)))/log(sin(x))))=0
The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“A secret's worth depends on the people from whom it must be kept.” ― Carlos Ruiz Zafón
#63 2012-05-02 09:27:01
- Sumasoltin
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Re: Implicit Equation Grapher
bobbym wrote:
Hi Sumasoltin;
You left out the http:\\ so the img tags did not work.
Thank you for your care. Actualy, I did that on purpose. You know, there is a restriction for new menbers.
Last edited by Sumasoltin (2012-05-02 09:28:03)
#64 2012-05-02 09:30:17
- anonimnystefy
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Re: Implicit Equation Grapher
So that's why you did it. Either way,it is a very cool graph.
The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“A secret's worth depends on the people from whom it must be kept.” ― Carlos Ruiz Zafón
#65 2012-05-02 09:40:06
- Sumasoltin
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Re: Implicit Equation Grapher
anonimnystefy wrote:
So that's why you did it. Either way,it is a very cool graph.
Try this: HTTP://www.xamuel.com/inverse-graphing-calculator.php?phrase=anonimnystefy&clientAction=15.click
Last edited by Sumasoltin (2012-05-02 09:41:46)
#66 2012-05-02 09:46:04
- anonimnystefy
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Re: Implicit Equation Grapher
Wow!!! That's so awesome! Thanks!
Not a very pretty equation though. 
The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“A secret's worth depends on the people from whom it must be kept.” ― Carlos Ruiz Zafón
#67 2012-05-02 17:15:54
- bobbym
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Re: Implicit Equation Grapher
That is a nice page, thanks.
In mathematics, you don't understand things. You just get used to them.
90% of mathematicians do not understand 90% of currently published mathematics.
I am willing to wager that over 75% of the new words that appeared were nothing more than spelling errors that caught on.
#68 2012-05-13 23:19:36
- anonimnystefy
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Re: Implicit Equation Grapher
Try this:
and the copy/paste form:
y*sin(x)=x*cos(y)
The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“A secret's worth depends on the people from whom it must be kept.” ― Carlos Ruiz Zafón
#69 2012-05-13 23:25:05
- anonimnystefy
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Re: Implicit Equation Grapher
And another one:
copy/paste form:
sin(x^2+y^3)=cos(x*y^5)
The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“A secret's worth depends on the people from whom it must be kept.” ― Carlos Ruiz Zafón
#70 2012-05-13 23:27:00
- anonimnystefy
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Re: Implicit Equation Grapher
This one is almost a grid:
(x+y)/(x*y)=sin(x)+cos(y)
This one,too:
sin(x)+cos(y)=e^(x*y)
Last edited by anonimnystefy (2012-05-13 23:31:18)
The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“A secret's worth depends on the people from whom it must be kept.” ― Carlos Ruiz Zafón
#71 2012-05-13 23:32:40
- anonimnystefy
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Re: Implicit Equation Grapher
This one produces some sort of chains or something like that:
sin(x)+cos(y)=e^(x*y)-e^(sin(x)-cos(y))
The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“A secret's worth depends on the people from whom it must be kept.” ― Carlos Ruiz Zafón