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.

(restored equation*)

$\begin{displaymath}\frac{\partial}{\partial y} = \left (\sin \theta \sin \phi \r... ...os \phi}{r \sin \theta}\right )\frac{\partial}{\partial \phi} \end{displaymath}$

(12)

and

$\begin{displaymath}\frac{\partial}{\partial x} = \left ( \frac{\partial r}{\part... ...\phi}{\partial x}\right )_{y,z}\frac{\partial}{\partial \phi} \end{displaymath}$

$\begin{displaymath}\frac{\partial}{\partial x} = \left ( \sin \theta \cos \phi\r... ...{\sin K}{r \sin \theta}\right )\frac{\partial}{\partial \phi} \end{displaymath}$

2001-12-26