Begin this class activity by defining a function file to evaluate f $($x$)=$ cos$(3$x$+1)$

ln$($x$2+4).$ Eval$-$

uate the function for inputs for five different values for x in $[1,15]$ using two different

strategies. In each case, call the function from within a MATLAB script.

$($a$)$ Write the function file to have one output and one input.

The lines beginning with $\%$ below are comments; these are provided to help you

understand the script. You are strongly encouraged to provide comments in any

code you write. The comments help you remember what you intended to do when

you wrote the code, and the comments also help your team members understand

your code.