Remain Sum (What am I doing for this)

*I haven't got to the lesson in class about this, but I'd like to jump start before I learn anything in class about it.*

The Question:

Consider the Integral

Quote:

(a) Find the Riemann sum for this integral using right endpoints and n=4.

(b) Find the Riemann sum for this same integral, using left endpoints and n=4

To do this, am I taking the anti-derivative to get f(x) then solving for part a and b?

The Anti-derivative by the way is:

Lastly, this has nothing to do with the problem, but the thread its self. What tags should I put on this to help someone else in the future?