(adsbygoogle = window.adsbygoogle || []).push({}); 1. The problem statement, all variables and given/known data

Find the QR factorization for the 4x3 matrix M

1 1 0

1 0 2

1 0 1

1 1 1

2. Relevant equations

M = QR

3. The attempt at a solution

I got the first two columns of Q correct, but im getting the third wrong for some reason beyond me.

for Q, i got u_{1}= 1/2 (1, 1, 1, 1) (vertical, not horizontal)

and u_{2}= 1/2 (1, -1, -1, 1) (once again vertical, not horizontal, dont know how to make matrices easily on here)

I got R correct except for the last number in the bottom right, need v_{3}perp.

thanks

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# Homework Help: Find the QR Factorization of a matrix

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