Gradescope before due time.

Question $1(10$ points$).$ Consider the function $f(x)=2x^{\frac{2}{3}}-x$

$($a$)$ Find all intervals of increase or decrease.

$($b$)$ Find all local maximum and minimum values.

$($c$)$ Find the intervals of concavity and the inflection points.

$($d$)$ Use the information from parts $($a$)-($c$)$ to sketch the graph.