3) Assume that http://webwork.umemat.maine.edu/webw...7f1bf381b1.png equals its Maclaurin series for all x.

Use the Maclaurin series for http://webwork.umemat.maine.edu/webw...5f4771bad1.png to evaluate the integral . Your answer will be an infinite series. Use the first two terms to estimate its value.

I am not sure how to do this!