Chapter 5, Problem 40P

The Taylor series for cos(x) is:

$1-\frac{x^2}{2!}+\frac{x^4}{4!}-\frac{x^6}{6!}+\frac{x^8}{8!}-\frac{x^{10}}{10!}+\mathrm{...}$

Plot the figure on the right, which shows, for $-2\pi \le x\le 2\pi$ , the graph of the function cos(x) and graphs of the Taylor series expansion of cos(x) with two, four, and six terms. Label the axes and display a legend.