# prod

## Purpose

Product of matrix elements.

## Synopsis

    p = prod(X)

## Description

`prod(X)`, where `X` is a vector, is the product of the elements of `X`. For matrices, `prod(X)` is a row vector with the product over each column.

## Examples

The magic square of order 3 is

    M = magic(3)

    M =
        8    1    6
        3    5    7
        4    9    2

The product of the elements in each column is

    prod(M) =
        96    45    84

The product of the elements in each row can be obtained by transposing twice.

    prod(M')' =
         48
        105
         72

## See Also

    cumprod, sum

(c) Copyright 1994 by The MathWorks, Inc.