Write a MATLAB function cpoint. $m$ that will return the $(x,y)$ coordinate of a critical point $($maximum$/$minimum$)$ in the function it receives when called. The function expects a formula handle of the function, a formula handle of the derivative of the function, and the interval that should contain a critical point. If cpoint. $m$ cannot or does not determine a critical point, it will return the values of NaN for both $x$ and $y.$