Function operation - PowerPoint PPT Presentation

9-4

Operations with Functions. 9-4. Warm Up. Lesson Presentation. Lesson Quiz. Holt Algebra2. x – 3. x – 2. Warm Up Simplify. Assume that all expressions are defined. 1. (4 x + 5) – ( x 2 + 3 x – 4). – x 2 + x + 9. 3. Objectives. Write and evaluate composite functions.

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6.6 Function Operations

6.6 Function Operations. Function Operation. Addition (f+g)(x) = f(x) + g(x) Multiplication (f * g)(x) = f(x) * g(x) Subtraction (f-g)(x) = f(x) – g(x) Division (f/g)(x) = f(x) / g(x) , g(x) ≠0. Example: Let f(x) = 5x 2 -4x and g(x) = 5x+1, find f+g and f-g. f+g = 5x 2 -4x + 5x+1

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Algebra II 7-6 quiz

Algebra II 7-6 quiz. Let f(x) = 2x 2 and g(x) = 3x-1. Perform each function operation. Then find the domain. f(x) + g(x) f(x) – g(x) f(x) * g(x) f(x)/g(x) (f o g) (x)

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