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## Homework Statement

http://img19.imageshack.us/img19/723/43674288.jpg [Broken]

## Homework Equations

## The Attempt at a Solution

1. whats the difference between integrand and definite integral?

2. can you tell me if so far i did everything correct or not.

3. would the 3rd one be I?

4. function of f? i have no idea.. no of the options seem to fit in.. :|

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