`Composition of Functions 8-7Let's review . . . Definition of a functionDomain RangeComposition of FunctionsExamples: 1. If f ( x) = 2x2 + 3 and g(x ) = x + 7, find g f ( x) .()2. If f ( x) = 4x- 1 and g(x ) = x 2 - 4 , find g o f ( x ).[]3. If f ( x) = x+ 7 and g(x ) = x 2 - 4 , find f o g ( 2) and g o f (2) .[][]4. If f ( x) = x2 and g(x ) = 2x 2 + 2x - 1, find f o g ( x ) and g o f (x ) .[][]Composition of Functions 8-75. If f ( x) = x2 + 5, g(x ) = 9x - 1 and h(x ) = -2x find f o (g o h) (x ) .[]RecursionIterationExample: 1. Find the first four iterations of each function for the given initial value. f (0) = 7 and f ( n) = f ( n -1) + 2n2. Find the first four iterations of each function for the given initial value. 3 f (0) = and f ( n) = 2 f ( n - 1) 23. Find the first four iterations of each function for the given initial value. 1 f (0) = 96 and f ( n) = f ( n -1) 4`

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