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Coordinate cilindriche

$\displaystyle \nabla(\cdots) \ =\ \ensuremath{\frac{\partial (\cdots)}{\partial... ..._\theta}\ + \ \ensuremath{\frac{\partial (\cdots)}{\partial z}} \vec{\imath_z} $

Figura A.1: Coordinate cilindriche.
\includegraphics[width=75mm]{coor_cil.eps}

2009-01-26