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Question: How do I plot a function with two variable differentiated equation?

Question:How do I plot a function with two variable differentiated equation?

zombiese 0 Maple
plot
April 21 2012
0

See my code:

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restart;

with(plots); with(PolynomialTools); with(LinearAlgebra);

f := (x, y) -> ((2*x^2+y^2*(x^2*(-2+sqrt(1/x^4+4/(x^2*y^2)+4/y^4+4))-1))/(4*x^2-2*y^2+4))^(1/2) ;

g := diff(f(x, y), x);

plot([g(.1, y), g(1, y), g(3, y)], t = 0 .. 10);

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Here is error message:

Warning, unable to evaluate the functions to numeric values in the region; see the plotting command's help page to ensure the calling sequence is correct.

 

How can I plot the two variables differentiated function?
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