# Calculus 2 integrals

## Homework Statement

Here are the problems
http://imgur.com/a/kbtPS
The problems I need help with are 1 and
4(a)

## Homework Equations

The second fundamental theorem of calculus

## The Attempt at a Solution

For problem 1, I calculated the areas under the curve (using remmien summs) and tried to find the x value that would approximate f(x)=-.75

For problem 4(a), all i did was that since it was an integral, taking the derivative would just be the integrals and that's how I got that answer.[/B]