# large derivative

• Jan 30th 2007, 03:43 AM
Patek
large derivative
Can someone give the derivative of the equation below.

Joram
• Jan 30th 2007, 03:50 AM
topsquark
The trouble I am having with this is that your derivative isn't picking out a specific value of "i."

-Dan
• Jan 30th 2007, 04:01 AM
Patek
Thanks...
Yes the derivative when i=k is easily obtained. However I need the complete system of solutions. I forgot to mention though that the derivative needs to be zero. To be precise the vector of derivatives need to equal a empty vector, see below.

Joram
• Jan 30th 2007, 12:36 PM
topsquark
Quote:

Originally Posted by Patek
Yes the derivative when i=k is easily obtained. However I need the complete system of solutions. I forgot to mention though that the derivative needs to be zero. To be precise the vector of derivatives need to equal a empty vector, see below.

Joram

If I'm understanding you correctly then what you need to do is take the derivative for i = k, where k is at the moment undefined. Then your vector components will be in terms of the index k as k runs from 1 to m.

-Dan
• Jan 31st 2007, 02:19 AM
Patek
Thanks...
Thanks, your hint helped me solve it.