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revision 1.1 by adcroft, Wed Aug 8 16:16:19 2001 UTC | revision 1.2 by cnh, Thu Sep 27 01:57:17 2001 UTC | |
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# | Line 34 The `grad' ($\nabla $) and `div' ($\nabl | Line 34 The `grad' ($\nabla $) and `div' ($\nabl |
34 | spherical coordinates: | spherical coordinates: |
35 | ||
36 | \[ | \[ |
37 | \nabla \equiv \left( \frac{1}{r\cos \phi }\frac{\partial }{\partial \lambda }% | \nabla \equiv \left( \frac{1}{r\cos \phi }\frac{\partial }{\partial \lambda } |
38 | ,\frac{1}{r}\frac{\partial }{\partial \phi },\frac{\partial }{\partial r}% | ,\frac{1}{r}\frac{\partial }{\partial \phi },\frac{\partial }{\partial r} |
39 | \right) | \right) |
40 | \] | \] |
41 |
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