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##

Multiplication of elements of each column of a matrix : `product`

`product` takes as argument a matrix *A*.

`product` returns the list whose elements are the product of the elements
of each column of the matrix *A* (see also 1.37.31 and
1.42.8).

Input :
`product([[1,2],[3,4]])`

Output :
`[3,8]`

giac documentation written by Renée De Graeve and Bernard Parisse