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| revision 1.1.1.1 by adcroft, Wed Aug 8 16:16:19 2001 UTC | revision 1.3 by cnh, Wed Oct 10 16:48:38 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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