Milentije Messages 47 Reaction score 0 Thread starter Dec 26, 2011 #1 I have problem like attached. Attachments Doc3.pdf Doc3.pdf 6.6 KB · Views: 251
mathman Science Advisor Homework Helper Messages 8,130 Reaction score 575 Dec 26, 2011 #2 Derivative with respect to what?
Milentije Messages 47 Reaction score 0 Dec 27, 2011 #3 Ok,I need to put this. dik=Vi-Xk and represents Eucleadean norm Derivative with respect to Vi.