How do I multiply the elements in each column, for every column in a matrix in MATLAB?

Question

For example, given the matrix

A = [ 1 2 3 ; 4 5 6; 7 8 9];

how do I multiply the column elements to get the result as result=[1*4*7 2*5*8 3*6*9]

Answer 1

Use the prod function with an optional argument indicating along which dimension the multiplication is to be carried out. For your case,

A=[ 1 2 3 ; 4 5 6; 7 8 9];
prod(A,1)

ans =

    28    80   162

Answer 2

prod(A) gives you this result.