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## Homework Statement

[PLAIN]http://img843.imageshack.us/img843/3995/calc3.jpg [Broken]

## The Attempt at a Solution

Im here asking for some help in direction on how to do these problems so that I can find the solution by myself... I would really really appreciate any help anyone could provide ...

I am not sure how to represent the domain as a function, and if anyone could point me in the right direction, I'm sure I could get the answer.

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