CHAPTER_ppt_8_2

CHAPTER_ppt_8_2 - Given that g ( x ) = x 2 – 2 x , find g...

This preview shows pages 1–5. Sign up to view the full content.

§ 8.2 Reviewing Function Notation and Graphing Nonlinear Functions

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
Martin-Gay, Beginning and Intermediate Algebra, 4ed 2 Letters such as f , g , and h are often used to name functions. The symbol f ( x ) means function of x and is read “ f of x .” This notation is called function notation . y = – 3 x + 2 can be written as f ( x ) = – 3 x + 2 Function Notation Note that f ( x ) is a special symbol used to denote a function. The symbol f ( x ) does NOT mean f · x ( f times x. ) .
Martin-Gay, Beginning and Intermediate Algebra, 4ed 3 When we want to evaluate a function at a particular value of x , we substitute the x -value into the notation. Evaluating Functions

This preview has intentionally blurred sections. Sign up to view the full version.

View Full Document
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: Given that g ( x ) = x 2 – 2 x , find g (– 3). Then write down the corresponding ordered pair. g (– 3) = ( – 3 ) 2 – 2( – 3 ) = 9 – (– 6) = 15. The ordered pair is (– 3, 15). Example: Martin-Gay, Beginning and Intermediate Algebra, 4ed 4 Graph y = 2 x 2 . x y 1 2 – 1 2 2 8 – 2 8 Graphing Nonlinear Functions Example: x y (2, 8) (-2, 8) (1, 2) (-1, 2) (0, 0) Martin-Gay, Beginning and Intermediate Algebra, 4ed 5 Graph y = | x |. Graphing Nonlinear Functions Example: x y 1 1 – 1 1 2 – 2 2 2 x y (2, 2) (-2, 2) (1, 1) (-1, 1) (0, 0)...
View Full Document

This note was uploaded on 11/04/2011 for the course MATH 103 taught by Professor Alraban during the Fall '10 term at Montgomery College.

Page1 / 5

CHAPTER_ppt_8_2 - Given that g ( x ) = x 2 – 2 x , find g...

This preview shows document pages 1 - 5. Sign up to view the full document.

View Full Document
Ask a homework question - tutors are online