Problem $2\mathrm{.}9$

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Many built$-$in MATLAB functions will work on arrays as well as scalar values. For example, if you type $sin(x)$ in MATLAB, and $x$ is an array, the sin$()$ function will return an array of the same size.

Write a code to do the following:

Create an array named the

Create arrays named $f1$ and $f2,$ which are defined as follows:

$f1()=2*sin()$

$f2()=3*cos()$

The code will then plot the arrays for you. $($This is how you can plot functions in MATLAB.$)$