Lecture 1 - UH
Algebraic Test Definition 1. A function f is said to be one-to-one (or injective) if f(x 1) = f(x 2) implies x 1 = x 2. Lemma 2. The function f is one-to-one if and only if ∀x ... The graph of f−1 is the graph of f reflected in the line y = x. Example 13. Given the graph of …
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