The following is a formal definition for if, and only if,
Chapter 11, Problem 3E(choose chapter or problem)
Problem 3E
The following is a formal definition for if, and only if, ∃ positive real numbers k, A, and B such that ∀x > k, A|g(x)| ≤ | f (x)| ≤ B|g(x)|.
a. Write the formal negation for the definition using the symbols ∀ and ∃.
b. Restate the negation less formally without using the symbols ∀ and ∃.
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