Functions 7 - Composite functions

Functions 7 - Composite functions
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2069 views, 2 ratings - 00:10:54
Part of video series Relations and Functions
Taught by YourMathGal
More free YouTube videos by Julie Harland are organized at http://yourmathgal.com
Learn how to compute the value of composite functions.
  • What is (f o g)(-2) if f(x) = x^2 - 3x + 5, g(x) = -4x + 1, and h(x) = square root of x?
  • What is (h o g)(-2) if f(x) = x^2 - 3x + 5, g(x) = -4x + 1, and h(x) = square root of x?
  • What is (g o f)(4) if f(x) = x^2 - 3x + 5, g(x) = -4x + 1, and h(x) = square root of x?
  • What is (h o f)(-5) if f(x) = x^2 - 3x + 5, g(x) = -4x + 1, and h(x) = square root of x?
  • What is (f o g)(x) if f(x) = x^2 - 3x + 5, g(x) = -4x + 1, and h(x) = square root of x?
  • How do you compute the value of composite functions?
  • How do you know which function to compute first in a composite function?
This lesson shows how to do some computations with composite functions. Five different problems are shown using the same 3 functions and evaluating the composite of the functions in different orders. This is a great composite function tutorial with some very complete examples.
  • Currently 4.0/5 Stars.
Reviewed by MathVids Staff on July 11, 2010.
 
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