Fuente TeX:

\frac{\partial h(0,\frac{\pi}{2})}{\partial y} = \frac{\partial g\bigl(f(0,\frac{\pi}{2})\bigr)}{\partial x} \frac{\partial f_1(0,\frac{\pi}{2})}{\partial y} +\frac{\partial g\bigl(f(0,\frac{\pi}{2})\bigr)}{\partial y} \frac{\partial f_2(0,\frac{\pi}{2})}{\partial y} + \frac{\partial g\bigl(f(0,\frac{\pi}{2})\bigr)}{\partial z} \frac{\partial f_3(0,\frac{\pi}{2})}{\partial y}