How to take the product of distinct array values?

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Sean
Sean 2014-6-25
评论： Sean 2014-6-25
clc;
clear all;
close all;
Bx = 720;
By = 360;
g = gcd(Bx,By);
f = factor(g);
f_prod = prod(f);
In this example f = [ 2 2 2 3 3 5 ], and prod(f) = 360, but I just want to receive the product of distinct primes (i.e. 2*3*5). Is there a way to do this?

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John D'Errico
John D'Errico 2014-6-25
prod(unique(f))

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