Regarding mathematical statistics, solve a and b:

Assume that X has a continuous birth distribution with density function

f$($x$)=\{2$x $0<=$ x $<=1$

$\{0$ otherwise

Determine the value of d that minimizes

$($a$)$ E $[($X $$ d$)^2]$

$($b$)$ E $[|$X $$ d$|].$