What is my error in for loop to find the cumulative sum?

for i=1:10 cumulativesum=cumulativesum+x(i) end

Answer 1

[Roger Stafford]

To be safe, you need to set 'cumulativesum' to zero before starting in that for-loop. It might have some other value than zero from some previous operation, which would spoil the computation.

Also be aware that matlab has a function, 'cumsum', which will find the cumulative sum of a vector, as well as the cumulative sums of an array's rows or columns.