I'm trying to plot this function. It gives me the following error.
Warning: Matrix is singular to working precision
I'm using Matlab 2011a.
G=@(x1,x2)(-(1+cos(12*sqrt(x1^2+x2^2)))/(0.5*(x1^2+x2^2)+2));
x=-5:.1:5; y=-5:.1:5; [x1 x2]=meshgrid(x,y);
mesh(x2,x1,G(x1,x2))
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