> Use MATLAB to evaluate the following functions at the given values of x. Type in the command clear x beforehand.

$f= \sqrt{3x-6} , x=5$ (answer is 3)

$g= \frac{x}{\left|x\right|} ,x=3,x=-3$ (answers are 1, -1)

$h=2x^{2}-x,x=2$ (answer is 6)