Evaluate:

$\displaystyle \int ^1_0 \frac {d}{dx} (e^{arctan(x)}) dx $

This problem does not make sense to me?

I am reading it as find the derivative $\displaystyle (\frac {d}{dx}) $ of the antiderivative? .... which does not make sense to me at all.

I guess im just unsure how to do this problem in general.

Any help would be great.

Thank you.