Unformatted text preview: f1 reverses the eﬀect of f in this case. The graph of f1 is obtained by reﬂecting the graph of f about the line y = x . Logarithmic Functions log a x = y ⇔ a y = x (circle trick) The logarithmic function log a x has domain (0 , ∞ ) and range R . Its graph is the reﬂection of the graph of y = a x about the line y = x . What is the graph of log a x when 0 < a < 1? 1...
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 Fall '08
 Noohi
 Calculus, Inverse Functions, Inverse function, Logarithm, Injective function, onetoone function, Ms. Hoa Nguyen, Review Inverse Functions

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