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HOW DO I PLOT THIS GRAPH

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Zeng Zhi Tee
Zeng Zhi Tee 2018-9-2
关闭： MATLAB Answer Bot 2021-8-20
Create a surface plot of the following function: Z = (4x^2+y^2+x-1)e^(-x^2-y^2)
the function z has 2 maximum points and 1 minimum point. Make sure your graph shows these 3 points clearly.
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Zeng Zhi Tee
Zeng Zhi Tee 2018-9-9
编辑：Walter Roberson 2018-9-9
This Correct?
[x,y]=meshgrid(-2:0.1:2,0:1);
z = (4.*x.^2 + y.^2 + x - 1).*exp((-x.^2) - (y.^2));
surf(x,y,z)
Walter Roberson
Walter Roberson 2018-9-9
That looks okay.
I tend to suggest
surf(x, y, z, 'edgecolor', 'none')
to prevent the black edges from being drawn. The black edges are constant thickness, and can easily hide the graph itself when you plot more densely.
Notice by the way that you are only using two distinct points in y, since 0:1 is the same as [0 1] . Perhaps you were thinking of something like 0:.1:1

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