1) Demuestre Si la proposición ¬ ( p Ʌ ¬ q Ʌ ¬ r) es falsa, entonces la proposición

p → ( q Ʌ r ) es:

a) Verdadera b) Falsa

2) Identifique cuál de las siguientes formas proposicionales NO es tautológica.

a) (p v q ) → (¬p →q)

b) [ (p → r ) Ʌ ( q → r ) ] → [ ( p v q ) → r ]

c) [ ( p v q ) Ʌ ¬p ] → q

d) [ ( ¬q → ¬p ) ] → ¬q

e) [(p → q ) Ʌ ( q → r )] → (p → r )

AYUDAAA, HELP MI PLS.

Muchas gracias de antemano!

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