Problem $-2$: Obtain the truth table of the following functions, and express each function in sum$-$of$-$minterms and a$.($b$+$co$)($c$+$bd$)$ product$-$of$-$maxterms form c$.($c$\text{'}+$djbc$)$ d$.$ bd$\text{'}+$acd'$+$ab'c$+$a$\text{'}$c