and Calculate the Laplacian L(u) and give your anser in terms of r. Use dr/dx=d/x etc. now I'm stuck calculating the second order derivative
Last edited by superdude; Oct 8th 2009 at 04:21 PM. Reason: solved
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Originally Posted by superdude and Calculate the Laplacian L(u) and give your anser in terms of r. Use dr/dx=d/x etc. now I'm stuck calculating the second order derivative If then
Originally Posted by Danny If then could you please elaborate? where does this come from? Does mean square r before taking it's derivative with respect to x? This is what I've got but I know it's wrong:
Originally Posted by Danny If then If then we have the operator Therefore
got it
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