sum, prod, cumsum, cumprod

• Function sum adds row elements, and the function prod multiplies row elements:

>> sum(1:1000)

ans =

500500

>> prod(1:5)

ans =

120

• Function cumsum computes a row of the partial sums and cumprod computes a row of the partial products:

>> cumprod(1:7)

ans =

1 2 6 24 120 720 5040

>> cumsum(odds)

ans =

1 4 9 16 25 36 49 64

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