math

posted by Anonymous

Which statement is logically equivalent to ~a ¨ b?

a ¨ ~b
b ¨ ~a
~b ¨ a
~b ¨ ~a

  1. MathMate

    In Western-8859-1 encoding, the question is:
    Which statement is logically equivalent to ~a → b?

    a → ~b
    b → ~a
    ~b → a
    ~b → ~a

    ~b → a is the correct answer.

    Consider the statement
    a=I ate
    b=I am hungry

    So
    ~a → b means
    If I did not eat, I am hungry.
    Try to interpret the rest of the statements, and the only one that is logically equivalent is
    If I am not hungry, I ate. (~b→a)

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