(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

The Laplace operator Δ is defined by: Δ=

Show in polar coordinatesrand Θ, that the Laplace operator takes the following form:

http://upload.wikimedia.org/wikipedia/en/math/0/7/a/07a878276cffd0c680f3f827204aba24.png

2. Relevant equations

x=rcos(Θ), y=rsin(Θ), r ≥ 0, Θ ∈ [0,2∏]

3. The attempt at a solution

It seems simple; convert the x and y in terms of polar coordinates, and differentiate twice. However, when i attempt to differentiate twice, in respect to r and theta, my r disappears and the trig function simply reverts.

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# Homework Help: Laplace Operator

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