MATLAB: Could anyone help to draw the 3D graph for below equation

graph

Could anyone help to draw the 3D graph for below equation? My equation is as follow but not working.
[My equation] f(x1, x2) = 1000 + 7 * x1 – 700 * x2 + 23 * x1 * x2 + 10 * x1^2 + 5.6 * x2^2
[Matlab]
[X,Y] = meshgrid(-30:10:50);
Z = 1000 + 7*X. - 700*Y. + 23*X.*Y. + 10*X.^2 + 5.6 * Y.^2;
Thank you.

Best Answer

There were some problems with the way you wrote your equation for ‘Z’. This works:
[X,Y] = meshgrid(-30:10:50);
Z = 1000 + 7*X - 700*Y + 23*X.*Y + 10*X.^2 + 5.6 * Y.^2;
figure(1)
surfc(X, Y, Z)
grid on
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