Mathematics

Problem

What are the first three nonzero terms of the Maclaurin series for

e^{-x^{2}}

? a)

1 - x^{2} + \dfrac{x^{4}}{2}

1 - x^{2} - \dfrac{x^{4}}{2}

1 + x^{2} - \dfrac{x^{4}}{2}

1 - x^{2} + \dfrac{x^{4}}{24}