Which of the following equals the Maclaurin series for truncated after the term?

MATHEMATICS · Single correct · AP · Calculus BC · Infinite Sequences and Series · Infinite Sequences and Series

Problem

Which of the following equals the Maclaurin series for

\cos x

truncated after the

x^{4}

term? (a)

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

(b)

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

(c)

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

(d)

1-\dfrac{x^{2}}{2!}+\dfrac{x^{3}}{3!}-\dfrac{x^{4}}{4!}