Find the first four nonzero terms of the Maclaurin series for f(x)=cos(x2)f(x) = \cos(x^2)f(x)=cos(x2).
1−x42+x824−x127201 - \frac{x^4}{2} + \frac{x^8}{24} - \frac{x^{12}}{720}1−2x4+24x8−720x12
1−x22+x424−x67201 - \frac{x^2}{2} + \frac{x^4}{24} - \frac{x^6}{720}1−2x2+24x4−720x6
1−x42!+x84!−x126!1 - \frac{x^4}{2!} + \frac{x^8}{4!} - \frac{x^{12}}{6!}1−2!x4+4!x8−6!x12
x2−x62+x1024x^2 - \frac{x^6}{2} + \frac{x^{10}}{24}x2−2x6+24x10