Using the fminbnd function in MATLAB, determine the maximum value for the following equation between the $x$ values of $-2$ and $4.$ You may refer to Example $15\mathrm{.}5$ in the textbook. Use $4$ decimal places.

$f(x)=2x-1\mathrm{.}75x^2+1\mathrm{.}1x^3-0\mathrm{.}25x^4$

$x_{\text{m}\text{a}\text{x}}=$

$f(x{)}_{\text{m}\text{a}\text{x}}=$