jacobian matrix
let 
be an open subset of 
. the jacobian matrix of a function 
is the 
matrix composed of the 
partial derivatives of 
evaluated at 
:
[cite:@calc_hubbard_2015 theorem 1.7.10]
be an open subset of . the jacobian matrix of a function is the matrix composed of the partial derivatives of evaluated at :[cite:@calc_hubbard_2015 theorem 1.7.10]