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Unformatted text preview: What’s the domain? = ) ( x g f Division  HW #17 f ( x ) = 2 x 2 + x3 g ( x ) = x1 f ( x ) g ( x ) = What’s the domain? Composition of Functions Symbols In English: First Evaluate: Then Evaluate: ( f o g )( x ) = f ( g ( x )) We can take functions of functions! 3 Composition Example f ( x ) = 3 x g ( x ) = 2 x + 1 = ) )( ( x g f o = ) 3 )( ( g f o What’s the domain? Composition  HW #25 g ( x ) = 2 x h ( x ) = x 2 + 4 ( g o h )(2) = What’s the domain? Practice Work • P. 394 712, 1518, 2029 – If you get hung up, try a similar odd numbered problem; then check your answer in the back of the book to measure your understanding. Still not comfortable with these ideas? Two more examples to come....
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This note was uploaded on 05/13/2011 for the course MTH 98 taught by Professor Johnson during the Fall '09 term at Grand Valley State University.
 Fall '09
 Johnson
 Algebra

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