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## Homework Statement

Does

**b**= [ 2 15 ]

^{T}lie in the column of the matrix A

[1 -3]

[2 5]

## Homework Equations

a basis of CS(U) forms a basis for the corresponding columns for CS(A)

## The Attempt at a Solution

I reduced the given matrix into row echelon form and determined its column space. But did not figure out if [2 15]

^{T}lies in the column space of A.