Solve the following problem
Realize the switching function f = x1x3 + x1x2 + x1x2x3 + x1x2x3 by an (8 × 1) multiplexer. Compare it with the realizations with (4 × 1) and (2 × 1) multiplexers. Use the Shannon expansions to determine the corresponding inputs.
Make sure you use enough details to support your answer.