TeX Quellcode:

\begin{array}{rcl}f'_{yz}(x,y,z) &=& \dfrac{3}{4}\cdot 3x^2y^{-\frac{1}{2}}z^{3-1}+0\\\\&=& \dfrac{9}{4}x^2y^{-\frac{1}{2}}z^{2}\end{array}