a greatest integer function f(x)=[[x]] is the greatest [[3]] = [[3.1]] = … · 2019-10-03 · 3.7...

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3.7 Int and piecwise comp.notebook 1 October 03, 2019 Oct 1511:54 AM x y 5 5 5 5 y=3 y=4 y=5

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Page 1: A greatest integer function f(x)=[[x]] is the greatest [[3]] = [[3.1]] = … · 2019-10-03 · 3.7 Int and piecwise comp.notebook 2 October 03, 2019 Aug 259:21 PM 37 Greatest Integer

3.7 Int and piecwise comp.notebook

1

October 03, 2019

Oct 15­11:54 AM

x

y

5

5

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­5

y=3y=4y=5

Page 2: A greatest integer function f(x)=[[x]] is the greatest [[3]] = [[3.1]] = … · 2019-10-03 · 3.7 Int and piecwise comp.notebook 2 October 03, 2019 Aug 259:21 PM 37 Greatest Integer

3.7 Int and piecwise comp.notebook

2

October 03, 2019

Aug 25­9:21 PM

3­7 Greatest Integer and Piecewise Functions

A greatest integer function f(x)=[[x]] is the greatest integer not greater than x.

[[3]] = [[3.1]] = [[3.95]] =

GREATEST INTEGER FUNCTION

Parent function: f(x) =  

Type of graph:

Domain:

Range: x

y

5

5

­5

­5

Page 3: A greatest integer function f(x)=[[x]] is the greatest [[3]] = [[3.1]] = … · 2019-10-03 · 3.7 Int and piecwise comp.notebook 2 October 03, 2019 Aug 259:21 PM 37 Greatest Integer

3.7 Int and piecwise comp.notebook

3

October 03, 2019

Aug 27­9:19 PM

Ex.1 Graph f(x) = [[x­2]], state the domain and range and describe the transformation from the graph of f(x).

EX. 2 A taxi company charges a fee for waiting at a rate of $0.75 per minute or any fraction thereof. Draw a graph that represents this situation. 

x

y

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Page 4: A greatest integer function f(x)=[[x]] is the greatest [[3]] = [[3.1]] = … · 2019-10-03 · 3.7 Int and piecwise comp.notebook 2 October 03, 2019 Aug 259:21 PM 37 Greatest Integer

3.7 Int and piecwise comp.notebook

4

October 03, 2019

Aug 27­9:19 PM

PIECEWISE FUNCTIONS

Piecewise functions are functions that are made up of different functions on parts of a domain.

Ex.3 Graph f(x) =           – x if x < 0

                             – x + 2  if x ≥ 0

State the domain and range.

Ex.4 The function       3x if 0 ≤ x < 1                                3 if 1 ≤ x < 1.5                             2x if x ≥ 1.5 

models a hiker’s distance in miles from the start of a trail x hours after she begins hiking. Graph the function, and then interpret each piece of the function.

x

y

5

5

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