a$)$ Reduce the expression $f=A[B\frac{+}{b}ar(C)(\frac{?}{\text{b}\text{a}\text{r}}(AB+AC))]$ using boolean theorems.

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b$)$ Expand $f(A,B)\frac{?}{b}=ar(A)\frac{+}{b}ar(B)$ to list out the associated minterms.

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