Problem 135. Inner product of two vectors

tricky and conceptual

Was confused for a second, probably because the operation isnt usually called the inner product

It *is* called Inner Product

I didn't know what it meant by "inner product" and that's why I was confused.

Literally just pressing one key...

easy

simple question

Good problem

good problem

I would clarify inner product. I've never heard it called that before and had to Google.

good review

Considering, that solving a complete random sudoku was rated medium, this should be marked easy!!

tried differnt method,every time it showing 'Assertion failed.', my result is right every time. give me tips so i can solve this problem.

A one-line code... Smart question :) had forgotten about this command.

y = dot(x,y)

This example doesn't work, should be z = dot(x,y), or z = sum(x.*y)

Please correct this problem. The output is y when it should be z_correct.

is the problem is correct? do we take output y or z?

LOL @y set as the output. I was nearly convinced this problem was invalid.

change the output variable to be z

I'm a bit confused. The code outputs the correct answers for the test suite, but it seems I do not pass while submitting.

answer is in terms of z but function give answer in terms of y again confused and give error for simple problem

Nice little bug in there.

This user (mohamed elbesealy) appears to have gamed the system, with fraudulent "likes" of this unremarkable solution submitted by 'sock-puppet' accounts. —DIV

This is correct. What am I missing?

eazy eazy

Why is this smaller than just x*y'?

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

That is the matrix attribute!

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

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!

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

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