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How to graph a f(x,y) function?

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Kristopher
Kristopher 2014-10-7
评论： Damon Bernard 2022-4-12
I took a Matlab course over the summer, and now have to graph a problem in calculus. I am rusty on my commands, so I'm not sure which one to use. I am trying to make a 3-d plot of a function f(x,y)=-(x^2-1)^2-(x^2y-x-1)^2. Do I have to open a function, or can I just use a command with a script?

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回答（3 个）

Saikat Chakraborty
Saikat Chakraborty 2021-5-14
syms x y
f(x,y)=-(x^2-1)^2-(x^2y-x-1)^2
ezplot(f)
José-Luis
José-Luis 2014-10-7
编辑：José-Luis 2014-10-7
x_int = [0 1];
y_int = [0 1];
[X Y] = ndgrid(linspace(x_int(1),x_int(2),150),...
linspace(y_int(1),y_int(2),150));
myFun = @(x,y) (x.^2-1).^2-(x.^(2*y)-x-1).^2
mesh(X,Y,myFun(X,Y))
Azzi Abdelmalek
Azzi Abdelmalek 2014-10-7
x=0:0.1:10;
y=0:0.1:10;
z=-(x.^2-1).^2-(x.^2*y-x-1).^2
plot3(x,y,z)

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