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inner product of two vectors

797 correct solutions
1369 incorrect solutions

Last solution submitted on May 28, 2015

1 player likes this problem

3 Comments

Daniel Pereira
on 16 Apr 2013

Why is this smaller than just x*y'?

Carlos Adrian Vargas Aguilera
on 1 Jul 2013

NOt just that, his output is y instead of z!! jajaj...

Mineralter
on 30 Sep 2013

That is the matrix attribute!

1 Comment

Harish Maradana
on 23 Nov 2012

i wrote solution like below
z = sum(x.*y);
it is working on my laptop but in cody show incorrect tell me why

3 Comments

Bryce
on 2 Feb 2012

Hmmm, description is a little confusing. Is length(x) always = length(y)? Are they nx1 or 1xn? Anyhow, I submitted several possible solutions (e.g. z = x'*y, z = sum(x.*y)) all of which failed the test suite ... but they work fine on my machine!

David Young
on 3 Feb 2012

Note that the output variable in the pattern is y, not z.

Stephen
on 1 Mar 2012

ha, yeah. thanks for commenting about that. I didn't see it either.

4 Comments