Created
May 10, 2020 02:18
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3) Determinar o valor lógico, quando possível, de cada uma das proposições a seguir, mostre o desenvolvimento completo para encontrar a resposta: | |
a) (r ^ (~q > p)) ^ ~((p <> ~q) > r v ~p) | |
sabendo que V(p) = F e V(r) = V | |
(v ^ (~q > F)) ^ ~((F <> ~q) > v v ~F) | |
(v ^ (~q > F)) ^ ~((F <> ~q) > v v ~F) | |
q = V | |
(v ^ (~V > F)) ^ ~((F <> ~V) > v v ~F) | |
(v ^ (F > F)) ^ ~((F <> F) > v v V) | |
(v ^ (F > F)) ^ ~((F <> F) > V) | |
(v ^ (V)) ^ ~((V) > V) | |
(v ^ (V)) ^ ~(V) | |
(V ^ F) | |
(F) | |
q = F | |
(v ^ (~F > F)) ^ ~((F <> ~F) > v v ~F) | |
(v ^ (V > F)) ^ ~((F <> V) > v v V) | |
(v ^ (V > F)) ^ ~((F <> V) > V) | |
(v ^ (F)) ^ ~((F) > V) | |
(F) ^ ~(F) | |
(F ^ V) | |
(F) | |
b) p <> q > p v ~r | |
sabendo que V(p) = F e V(r) = F | |
c) (p v q) ^ ~r | |
sabendo que V(p) = V e V(r) = V | |
(V v q) ^ ~V | |
q = V | |
(V v V) ^ F | |
V ^ F | |
F | |
q = F | |
(V v F) ^ F | |
V ^ F | |
F | |
d) (p > ~q) ^ (~p ^ r) | |
sabendo que V(q) = F e V(r) = V | |
p = V | |
(p > ~V) ^ (~p ^ V) | |
(V > F) ^ (F ^ V) | |
(V > F) ^ ~(F > ~V) // equivalência lógica do E/ ^ | |
(V > F) ^ ~(F > F) | |
(V > F) ^ ~(V) | |
(F) ^ (F) | |
(F) | |
p = F | |
(p > ~V) ^ (~p ^ V) | |
(F > F) ^ (~F ^ V) | |
(V) ^ (V) | |
(V) | |
> = condicional | |
<>=bicondicional |
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