$2-8.$

Using DeMorgan's theorem, express the function

$$

F$=$A$\backslash$overline$\{$B$\}$C$+\backslash$overline$\{$A$\}\backslash$overline$\{$C$\}+$AB

$$

$($a$)$ with onlyOR and complement operations. $($b$)$ with only AND and complement operations.

A $($c$)$ with only NAND and complement operations.