For problem 2.14 use eqn. 2.3.10 in text.
Now use one or more substitutions to put the integral into a form which matches one in your Integral Tables.

Note that the simpler the integral looks, the more likely you will be able to find it.

In your solution, include the name of the tables you used and (if applicable) a reference # for which one it was. (i.e. should be enough info so the reader could go look it up without too much trouble if they felt so inclined).

If you try to solve for x(t) (instead of t(x)) you will likely have major problems unless you already know what x(t) is!