Class Opener:. Identifying a Composite Function:

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Presentation transcript:

Class Opener:

Identifying a Composite Function:

Identifying a Composition of Two Functions:

ORQ Practice: Bacteria Count:

Inverse Functions:

Finding the Inverse Function Informally

Verifying the Inverse Function Algebraically

One – to – One Functions A function is one to one if, for a and b in its domain, f(a) = f(b) implies that a = b. A function f has an inverse function if and only if f is one to one.

Testing for one to one functions

Testing one to one functions

Horizontal Line Test Use the horizontal line test on a graph of a function to see if it is one to one. If it is a function the horizontal line will only hit the function one time.