| Author |
Comment/Response |
tang
|
 11/20/12 9:30pm
Dear all,
I am trying to calculate the partial derivative by mathematica, I have the following commands:
L1=a1+b1*x+c1*y;
L2=a2+b2*x+c2*y;
L3=a3+b3*x+c3*y;
N=L1*L2;
DNx=D[N,x];
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
Thanks,
Tang Laoya
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