How to use the SUM() function..?
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Hello,
I must be doing something very stupid here, as I can't get the sum() function to work at all;
X = [0 0.5 1 1.5 2 2.5]
sum(X(1,:))
From what I've read, this should sum all the element of row 1 of the matrix X and return a numerical result, but when I try it, I get the error:
Array indices must be positive integers or logical values.
Can anybody tell me what I'm doing wrong, please?
Thanks,
Paul
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