Question: A logic circuit realizes the function F(a,b,c,d) = a'b'+a'cd+ac'd+ab'd'. Assuming that a=c never occurs when b = d = 0, find a simplified expression

A logic circuit realizes the function F(a,b,c,d) = a'b'+a'cd+ac'd+ab'd'. Assuming that a=c never occurs when b = d = 0, find a simplified expression for F. (Hint: When can Don't-Cares be used?)

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