Find and plot the CDFs corresponding to each of the following PDFs:

$($i$)$

f$($x$)=1$

b$$a

: a $<=$ x $<=$ b

$0$ : otherwise

$($ii$)$

f$($x$)=$

$$

$$

$$

x : $0<=$ x $<=1$

$2$ x : $1<=$ x $<=2$

$0$ : otherwis