laplacian takes two arguments : an
expression F of n real variables and a vector of these variable names.
laplacian returns the laplacian de F, that is the sum of all second
partial derivatives, for example in dimension n=3:
∇2(F)= |
| + |
| + |
|
Example
Find the laplacien of F(x,y,z)=2x2y−xz3.
Input :
^
2*y-x*z^
3,[x,y,z])Output :