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## Homework Statement

See Attachment.

## The Attempt at a Solution

For the first two questions, I know I have to sub in values for a and b. But, i'm not sure what the output matrix is.

The 3rd q, to prove B is Basis for R^3. I just have to row reduce [(1,5);(1,6)] to get [(1,0);(0,1)] right? But like before, I don't know how to do b).

Any help is appreciated.