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Section 9.1 Composite and Inverse Functions. Composite Functions (f ◦ g)(x)=f(g(x)) Inverses and 1-to-1 Functions Finding Formulas for Inverses Graphing Functions and Their Inverses Inverse Functions and Composition. Two Functions: Concept and Notation for Composition.
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Section 9.1 Composite and Inverse Functions • Composite Functions (f◦g)(x)=f(g(x)) • Inverses and 1-to-1 Functions • Finding Formulas for Inverses • Graphing Functions and Their Inverses • Inverse Functions and Composition 9.1
Does an Inverse Function Exist?Tests for One-To-One Functions 9.1
Thinking about Inverse Functions • Do all Linear Functions have Inverse Functions? • All except Horizontal and Vertical Lines • What about Quadratic Functions (Parabolas)? • No: y=4 fails HLT 9.1
Consider g(x) = x3+ 2 and g -1(x) • Is g(x) one-to-one? 9.1
What Next? Exponential Functions • Present Section 9.2 9.1