how to draw surface
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how do I write the program that draws the two-dimensional integral surface of the function in Matlab ?采纳的回答
Ameer Hamza
2020-5-8
编辑：Ameer Hamza
2020-5-8
You can draw it using meshgrid and surf
[X, Y] = meshgrid(linspace(-3,3));
Z = exp(-X.^2-Y.^2);
surf(X,Y,Z)
shading interp
9 个评论
Beyza Taka
2020-5-8
Ameer Hamza
2020-5-8
But the limits on the integral are constant. They need to be variable to plot a surface. Can you show which limits of the integral are varying?
Beyza Taka
2020-5-8
Ameer Hamza
2020-5-8
编辑：Ameer Hamza
2020-5-8
I guess you want something like this
[X, Y] = meshgrid(linspace(0,2));
fun = @(X,Y) integral2(@(x,y) exp(-x.^2-y.^2), 0, X, 0, Y);
Z = arrayfun(fun, X, Y);
surf(X,Y,Z)
shading interp
Beyza Taka
2020-5-8
Ameer Hamza
2020-5-8
There was a typo. Try again.
Beyza Taka
2020-5-8
Ameer Hamza
2020-5-8
I am glad to be of help.
Ameer Hamza
2020-5-8
FYI, this is a faster version of the previous code in the comment
syms x y X Y
fun = matlabFunction(int(int(z,x,0,X),y,0,Y), 'Var', {X, Y});
[Xg, Yg] = meshgrid(linspace(0,2));
Z = arrayfun(fun, Xg, Yg);
surf(Xg,Yg,Z)
shading interp
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