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FUNCTION NOTATION AND EVALUATING FUNCTIONS

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aerona
15 diapositives · 817 Views · Nov 02, 2012

FUNCTION NOTATION AND EVALUATING FUNCTIONS. SECTIONS 5.1 & 14.1B. A ________ is a set of __________________. relation. ordered pairs. The ________ is the ______ of ________ numbers in a relation. domain. set. first. The ________ is the ______ of ________ numbers in a relation. range.

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FUNCTION NOTATION AND EVALUATING FUNCTIONS
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  1. FUNCTION NOTATION AND EVALUATING FUNCTIONS SECTIONS 5.1 & 14.1B

  2. A ________ is a set of __________________. relation ordered pairs The ________ is the ______ of ________ numbers in a relation. domain set first The ________ is the ______ of ________ numbers in a relation. range set second

  3. function A ___________ is a relation in which no number in the _________ is __________. domain repeated Functions can be represented five different ways: 1. ______________ 2. ______________ 3. ______________ 4. ______________ 5. ______________ mapping graph table Set of ordered pairs equation

  4. Sometimes we will only know one part of the ordered pair. We can use the equation to find the missing number. Example 1: Complete each ordered pair so that it is a solution to a. ( 1, ? ) What is ____ if _________? (1, 7) -2

  5. b. ( ?, 9 ) What is ____ if _________? (0, 9) -9

  6. TRY THIS…. c. ( 4, ? ) What is ____ if _________? (4, 1) -8

  7. Function notation replaces the independent variable, y with either f(x), g(x), or h(x). f of x f(x) is read as “ ____ _____ _____” Does not mean multiplication! g of x g(x) is read as “ ____ _____ _____” h of x h(x) is read as “ ____ _____ _____”

  8. Instead of writing, , we replace the y with is read as “ ___________________________________”

  9. Look at the mappings below. What is happening to each number in the domain to get the corresponding number in the range? What is happening to x to get the corresponding f(x) value? Domain Range 8 11 16 2 5 10 Function Rule: What is happening to x to get the corresponding f(x) value? Domain Range -6 0 10 -3 0 5 Function Rule:

  10. function rule The ______________ can be thought of as an operation that changes the numbers in the ___________ to make the ________. domain range Function notation: The right side of any function notation is called the _____________. function rule Replace the y with f(x) Right side of notation

  11. The numbers of the domain are sometimes called the ________ and the range is called the ___________. input output Changes the domain into the range input output Function Rule

  12. domain range Find the range for the function if the domain of f(x) is { 0, 2, 4 }. Range = { } Domain Range 0 2 4 1 7 13 Written as ordered pairs:

  13. Try this… For the function, , find the range if the domain is { -3, 0, 4 }. Input Output = = = Range:

  14. Sometimes we only want to only evaluate one element of the domain. when For example, if find “find when ”, can be written in a shorter form as “ ”. Plug 2 into the function rule. find Example 2: If .

  15. Try these… If find: A. . B. .