Need help with 3-D plotting

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Emmanuel Matata Bili Bili
评论： Emmanuel Matata Bili Bili 2020-10-23
Hi guys,
I need help with the error below. I'm trying to create a few 3-D plots based on the description below. My code is included.
Given function f(x,y) = x^2 + y-sin(xy), draw 3-D graph of contour, plot3, mesh, surface on the intervals x [-2*pi,2*pi] and y[-2*pi; 2*pi].
Thanks in advance!
x =-2*pi,2*pi
y = -2*pi,2*pi
[X,Y] = meshgrid ([-2*pi,2*pi], [-2*pi,2*pi])
contour(X,Y,X.^2+Y.^2)
axis square 
>>Warning: Contour not rendered for constant ZData
> In contour (line 51)

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采纳的回答

madhan ravi
madhan ravi 2020-10-23
编辑：madhan ravi 2020-10-23
[X, Y] = meshgrid(-2*pi : 0.01 : 2*pi);

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