Yes, you basically need to integrate. If you've never done an antiderivative before, then I suggest you look at a tutorial like this:

Pauls Online Notes : Calculus I - Integrals

For the first one you have:

If you differentiate the right side, you'll get the left side for any value of C, which is a constant. The point allows you to find C so you can determine the exact function:

Solve for C...