for example suppose we want to multiply each column by its coulmn number:
A =[
92 99 1 8 15 67 74 51 58 40
98 80 7 14 16 73 55 57 64 41
4 81 88 20 22 54 56 63 70 47
85 87 19 21 3 60 62 69 71 28
]
for it=2:10
A(:,it) = A(:,it)*it;
end
A
A =
92 198 3 32 75 402 518 408 522 400
98 160 21 56 80 438 385 456 576 410
4 162 264 80 110 324 392 504 630 470
85 174 57 84 15 360 434 552 639 280
