Barrons AP Calculus - David Bock

42. (A) Although there is no elementary function (one made up of polynomial, trigonometric, or
    exponential functions or their inverses) that is an anti-derivative of F ′(x) = e−x^2 , we know from
    the FTC, since F(0) = 0, that

To approximate use your graphing calculator

For upper limits of integration x = 50 and x = 60, answers are identical to 10 decimal places.

Rounding to three decimal places yields 0.886.