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## Homework Statement

[tex]f(x) = x - \sqrt{x}[/tex]

## Homework Equations

[tex]f'(x) = \lim_{h \to 0} \frac{f(a+h)-f(a)}{h}[/tex]

## The Attempt at a Solution

I'm not exactly sure how to solve this problem. I plugged the problem into the equation and got stuck... I have a class right now, so I'll have to post my work later.

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