Use Karnaugh maps to simplify the following Boolean functions expressed in the sum ojf minterms 1. a) f(x,y,z) = m1 + m2 + m5+ m6 + m7 xy b) f(w, x, y, z)-(0, 2, 4, 5, 6, 7, 1 2, 13) WX c) f(w, x, y, z) = (3, 4, 5, 6, 7, 9, 12, 13, 14, 15) WX