Recent content by funyhony

i want to loop on K vector values K = [3 5 7 9 11] and have with me inside the loop the index of the current vector value if i made for K = [3 5 7 9 11] disp(K) end i'll not have the index of K values i mean when K=9 i want to know that I'm in index 4 how to make that??

Dear Bill i really thank you for your help i really learned from you i couldn't know how to write m' and the sum , i was writing them as in word equation i still have problem in the part of summition m' k(xm) i don't know how to put the unknown values i'll try again and tell you what happened...

attached file here

i want to put this equation in mathematica to have derivative i always have error please tell me how to write it in mathematica to get the derivative also to solve the equation i attache the equation in word file