Date: Nov 21, 2012 1:15 AM Author: Tang Laoya Subject: How to calculate the partial derivative? Dear all,
I am trying to calculate the partial derivative by mathematica, I have the following commands:
I got the following result:
DNex=b2 (a1+b1 x+c1 y)+b1 (a2+b2 x+c2 y)
How to do to have the following result?
DNex=b2*L1 + b1 * L2