Mathematica 9 is now available
Student Support Forum
-----
Student Support Forum: 'How to calculate the partial derivative?' topicStudent Support Forum > General > "How to calculate the partial derivative?"

Next Comment >Help | Reply To Topic
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

URL: ,

Subject (listing for 'How to calculate the partial derivative?')
Author Date Posted
How to calculate the partial derivative? tang 11/20/12 9:30pm
Re: How to calculate the partial derivative? yehuda 11/25/12 08:38am
Re: How to calculate the partial derivative? yehdua 11/25/12 08:44am
Next Comment >Help | Reply To Topic