QuestionC. $\frac{2}{5}$ D. $\frac{2}{25}$
2. (2 $1 / 2$ points) The first 3 terms of the Maclaurin series of the function $f(x)=\sin (x) \cos (x)$ are: A. $x-\frac{2 x^{3}}{3}+\frac{2 x^{4}}{15}$ B. $1-\frac{2 x^{2}}{3}+\frac{2 x^{4}}{15}$ C. $x-\frac{2 x^{3}}{3}+\frac{2 x^{5}}{15}$ D. $1-x-\frac{x^{2}}{2}-\frac{x^{3}}{3}$