Q$2.$ Implement the function: $f(x,y,z)=\frac{\stackrel{}{x}}{b}ar(y)z+\stackrel{}{x}\frac{y}{b}ar(z)+x\frac{y}{b}ar(z)$ using:

$($Hint: it is wise to convert the function into the sum of minterm form; You are supposed to make three diagrams to implement the same function with the following three methods$)$

$(3)$ ROM and indicate the size of the ROM $($e$.$g$.2^{\frac{?}{\text{b}\text{a}\text{r}}(n)}m$ ROM$)($show the procedures$)(5$p$)($Hint: use crosses to disconnect the useless lines$)$