State whether the following conclusion are true or false:
a. NOT (P(x) OR Q(x)) ? (NOT (P(x)) AND (NOT (Q(x)))
b. NOT (? x) (P(x)) ? ? x (NOT (P(x))
b. (? x) (P(x)) ? ? x ((P(x))
a. TRUE
b. TRUE
c. FALSE
Computer Science & Information Technology