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Discussion Forum

Que. Let f(w, x, y, z) = ∑(0, 4, 5, 7, 8, 9, 13, 15). Which of the following expressions are NOT equivalent to f?
a. x'y'z' + w'xy' + wy'z + xz
b. w'y'z' + wx'y' + xz
c. w'y'z' + wx'y' + xyz + xy'z
d. x'y'z' + wx'y' + w'y
Answer:x'y'z' + wx'y' + w'y
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