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

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- Oct 7th 2009, 03:51 PMsuperdudeIs this function harmonic?[SOLVED]
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 - Oct 8th 2009, 07:37 AMJester
- Oct 8th 2009, 08:43 AMsuperdude
- Oct 8th 2009, 09:19 AMJester
- Oct 8th 2009, 03:19 PMsuperdude
got it