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# Matrices

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Hello, I am having a hard time figuring this out.

Let's say A is a matrix that projects vectors onto $$\begin{pmatrix}1 \\ 3 \end{pmatrix}$$.

What is matrix A?

Any help is appreciated.

Jul 25, 2022

$$\begin{pmatrix} 1/10 & 3/10 \\ 1/30 & 1/10 \end{pmatrix}$$