Problem:
Find the jacobian of the vector valued function $\begin{pmatrix} f(x,y,z)\\ g(x,y,z) \\ h(x,y,z)\end{pmatrix}$ where $f(x,y,z) = \frac{1}{\sqrt{z}}$, $g(x,y,z) = e^x$, and $h(x,y,z) = \cos (x y z)$
import math

from sympy import *
from sympy.abc import x, y, z

f = (1/(sqrt(z)))
g = math.e**x
h = cos(x*y*z)
X = Matrix([f, g, h]) 
print(X.jacobian((x, y, z)))
