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array element sum wih condition

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Tomas
Tomas 2012-4-28
Hello,guys and girls, i have a situation:
F=[5, 4, 3, 2, 1];
I would like to sum matrix elements in order like this:
5
5+4
5+4+3
5+4+3+2
5+4+3+2+1
Do you have any ideas?

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per isakson
per isakson 2012-4-28
Try the function, CUMSUM

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