Develop a MATLAB function to compute the Maclaurin series expansion for the cosine function given as:

$cosx={\displaystyle \underset{n=0}{\overset{}{}}}\frac{(-1{)}^n}{(2n)!}{x}^{2n}=1-\frac{x^2}{2!}+\frac{x^4}{4!}-\frac{x^6}{6!}+$cdots

Test your program for: $=\frac{}{3}(60)$ and $=\frac{7}{3}(420)$

The first line of the function should be:

function $[$fx$,$ea$,$et$,$iter$]=$ Lastname$\_$Cos$($x$,$es$,$ maxit$)$

Note: Pattern your function according to the sample in Fig. $4\mathrm{.}2.$ Be sure to calculate the et value also.