Use a K-map to find a minimal expansion as a Boolean sum of Boolean products of each of these functions in the variables w, x, y, and z. a) wxyz + wxỹz + wxy7 +wãy7 + wxyz b) wxyz + wxyz + wãyz + wxỹz...

Extracted text: Use a K-map to find a minimal expansion as a Boolean sum of Boolean products of each of these functions in the variables w, x, y, and z. a) wxyz + wxỹz + wxy7 +wãy7 + wxyz b) wxyz + wxyz + wãyz + wxỹz + wxy7 + wx yz c) wxyz + wxy7 + wxỹz + wã ỹz + wxy7 + wxyz + wxyz + wx yz d) wxyz + wxyz + wxỹz + wXyz + wxy7 + wxyz + wXyz +wxy7 +wxyz