- #1

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## Homework Statement

See figure attached for problem statement as well as the solution provided.

## Homework Equations

## The Attempt at a Solution

My only question is why can't I use,

[tex]32 \int ^{1}_{2} t\sqrt{8t^{2}+1}dt[/tex]

I realize that this will give me the negative of his answer, I just don't understand why it doesn't work.

I still have t bounded from 1 to 2.

What's different here?

Thanks again!