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am=a0.*(i^(n-m).*besselj(2*Z,n-m)+i^(n+m).*besselj(2*Z,n+m+2));

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[ Last edited by lxy6522 on 2009-10-12 at 21:11 ]
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n=2;
a0=1;
[Z,m]=meshgrid(linspace(0,6,100),linspace(0,20,100));
am=a0.*(i^(n-m).*besselj(2*Z,n-m)+i^(n+m).*besselj(2*Z,n+m+2));
surf(Z,m,real(am))
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