Vypo�t�te $\frac{\partial z}{\partial x},
\frac{\partial z}{\partial y},$ je-li
\roster
\item{} $x = ue^v, \, y = v \log u, \, z = u^2 + v$ pro $u = 1, \, v
=2;$
\item{} $x = u\sin v, \, y = v \cos u, \, z = uv$ pro $u = \pi,
\,v=\frac{\pi}{2};$
\item{} $x = u^2 - v^2, \, y = u^2 + v^2, \, z = uv^2$ pro
$u=1,\,v=1;$
\item{} $x = e^{u-v}, \, y = e^{2u + v}, \, z = u + v$ pro $u=1,
\, v =1.$
\endroster
