Recent content by mexion

so 1 more question \sum_{k=0}^{4} \sum_{j=1}^{5} (3^{k} + jk) how to calculate this without Matlab. Should I transform it? (but have no idea how) or just have to put [0;4] for k, and [1;5] for j, and add everything ?

Homework Statement \sum_{k=1}^{3} \sum_{j=0}^{4}k^{j} The attempt at a solution so this above means: (1+1^{1}+1^{2}+1^{3}+1^{4})*(1+2^{1}+2^{2}...)*(1+3...)*... or (1*1^{1}*1^{2}*1^{3}*1^{4})+(1*2^{1}*2^{2}...)+(1*3...)+...

yeah, my bad but thanks now it's correct thanks a lot :)

yeah my bad. but I've done it again ... and again wrong :( http://img41.imageshack.us/img41/7408/21102009125.th.jpg

Homework Statement so my problem is to calculate the determinant of this matrix \left[\begin{array}{ccccc} 1 & 2 & 3 & 3 & 5 \\ 3 & 2 & 1 & 2 & 2 \\ 1 & 2 & 3 & 4 & 5 \\ -1 & 0 & -8 & 1 & 2 \\ 7 & 2 & 1 & 3 & 2 \end{array}\right] Homework Equations The Attempt at a...