Question

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第19題求解 看不太懂題目再問什麼🥺🥺

y your answer to part (a) using an appropriate table.
18. Construct a truth table for each of the following expressions.
a) '(P10)
b) "PA'Q
c) (P-Q)('9- "P)
d) P→(
QR)
e) (P)R
f) '(P v Q R
g) '((P v 9) + R)
19. Let P be the proposition 2 = 5. If possible, find a proposition such that
PvQP Q is true. If possible, find a proposition such that PvQPAQ
is false.
20. a) Write the truth tables for the expressions (PHQ) - R and PH(
OR).
b) Find propositions P, Q, and R such that one of the two compound proposi-
tions (PH2)→ R and PH(
QR) is true and the other is false.
-