Repeat Problem 8.22 for the function

Data From Problem 8.22

Use the cubical representation and the method discussed in Section 8.4.2 to find a minimum cost SOP realization of the function f (x₁, . . . , x₄) = Σm(0, 2, 4, 5, 7, 8, 9, 15).

Section 8.4.2

Assume that the initial specification of a function f is given in terms of implicants that are not necessarily either minterms or prime implicants. Then it is convenient to define an operation that will generate other implicants that are not given explicitly in the initial specification, but which will eventually lead to the prime implicants of f. One such possibility is known as the ∗-product operation, which is usually pronounced the “star-product” operation. We will refer to it simply as the ∗-operation.

Sxtx{xx + $x+xxx + $x+xx7xx + +xx7xx + $x+xxx + xxx + $xxx = ($x x) f