1.3 twelve basic functions basic function:y=x, linear …€¦ · local extrema every non integer...

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1.3 12 functions complete.notebook August 31, 2017 1.3 Twelve Basic Functions In your notes, copy the following table: Basic Function: y=x, linear function Graph: Domain ( ∞,∞) Range( ∞,∞) Continuity yes Increasing/decreasing behavior Inc ( ∞,∞) Symmetry yes, about the origin, odd function Local Extrema None Horizontal asymptotes None Vertical asymptotes None

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Page 1: 1.3 Twelve Basic Functions Basic Function:y=x, linear …€¦ · Local Extrema every non integer value is both a local max and ... Which of the twelve basic functions makes up the

1.3 12 functions complete.notebook August 31, 2017

1.3 Twelve Basic Functions

In your notes, copy the following table:

Basic Function: y=x, linear functionGraph:

Domain (­∞,∞)Range(­∞,∞)Continuity yesIncreasing/decreasing behavior Inc (­∞,∞)Symmetry yes, about the origin, odd functionLocal Extrema NoneHorizontal asymptotes NoneVertical asymptotes None

Page 2: 1.3 Twelve Basic Functions Basic Function:y=x, linear …€¦ · Local Extrema every non integer value is both a local max and ... Which of the twelve basic functions makes up the

1.3 12 functions complete.notebook August 31, 2017

Basic Function: y=x2Graph:

Domain (­∞,∞)Range [0,∞)Continuity ­ yesIncreasing/decreasing behavior 

dec on (­∞,0] inc on [0,∞)Symmetry ­ yes about the y­axis ­ even functionLocal Extrema yes min (0,0)Horizontal asymptotes noneVertical asymptotes none

End behavior 

Page 3: 1.3 Twelve Basic Functions Basic Function:y=x, linear …€¦ · Local Extrema every non integer value is both a local max and ... Which of the twelve basic functions makes up the

1.3 12 functions complete.notebook August 31, 2017

Basic Function: y=x3 cubic Graph:

Domain (­∞,∞)Range (­∞,∞)Continuity ­ yes

Increasing/decreasing behavior  inc (­∞,∞)Symmetry ­ yes about the origin ­ odd functionLocal Extrema noneHorizontal asymptotes noneVertical asymptotes none

End behavior 

Page 4: 1.3 Twelve Basic Functions Basic Function:y=x, linear …€¦ · Local Extrema every non integer value is both a local max and ... Which of the twelve basic functions makes up the

1.3 12 functions complete.notebook August 31, 2017

Basic Function: y=|x|Graph:

Domain (­∞,∞)Range [0,∞)Continuity ­ yesIncreasing/decreasing behavior 

dec (­∞,0] inc [0,∞)Symmetry ­ yes about the y­axis ­ even functionLocal Extrema min @ (0,0) Horizontal asymptotes noneVertical asymptotes noneEnd behavior 

Page 5: 1.3 Twelve Basic Functions Basic Function:y=x, linear …€¦ · Local Extrema every non integer value is both a local max and ... Which of the twelve basic functions makes up the

1.3 12 functions complete.notebook August 31, 2017

Basic Function: y=1/x  reciprocalGraph:

Domain (­∞,0)U(0,∞)Range (­∞,0)U(0,∞)Continuity ­ no, infinite discontinuity @x=0Increasing/decreasing behavior 

dec on (­∞,0) dec on (0,∞)Symmetry ­ yes about the origin ­ odd functionLocal Extrema noneHorizontal asymptotes yes y=0Vertical asymptotes yes x=0End behavior 

Page 6: 1.3 Twelve Basic Functions Basic Function:y=x, linear …€¦ · Local Extrema every non integer value is both a local max and ... Which of the twelve basic functions makes up the

1.3 12 functions complete.notebook August 31, 2017

Basic Function: y=√x  square rootGraph:

Domain [0,∞)Range [0,∞)Continuity ­ yesIncreasing/decreasing behavior inc [0,∞)Symmetry ­ noneBoundedness below by y=0Local Extrema (0,0) absolute minimumHorizontal asymptotes noneVertical asymptotes none

End behavior 

Page 7: 1.3 Twelve Basic Functions Basic Function:y=x, linear …€¦ · Local Extrema every non integer value is both a local max and ... Which of the twelve basic functions makes up the

1.3 12 functions complete.notebook August 31, 2017

Basic Function: y=ex exponentialGraph:

Domain (­∞,∞)Range (0,∞)Continuity ­ yes

Increasing/decreasing behavior inc (­∞,∞)Symmetry ­ noneBoundedness below by y=0Local Extrema noneHorizontal asymptotes yes y=0Vertical asymptotes none

End behavior 

Page 8: 1.3 Twelve Basic Functions Basic Function:y=x, linear …€¦ · Local Extrema every non integer value is both a local max and ... Which of the twelve basic functions makes up the

1.3 12 functions complete.notebook August 31, 2017

Basic Function: y=ln(x)Graph:

Domain (0,∞)Range (­∞,∞)Continuity ­ yes

Increasing/decreasing behavior inc (0,∞)Symmetry ­ noLocal Extrema noneHorizontal asymptotes noneVertical asymptotes yes, x=0

End behavior 

Page 9: 1.3 Twelve Basic Functions Basic Function:y=x, linear …€¦ · Local Extrema every non integer value is both a local max and ... Which of the twelve basic functions makes up the

1.3 12 functions complete.notebook August 31, 2017

Basic Function: y=sin(x)Graph:

Domain (­∞,∞)Range [­1,1]Continuity ­ yesIncreasing/decreasing behavior lots ­ more laterSymmetry ­ yes about the origin ­ odd functionBoundedness yes ­ above by y=1, below by y= ­1Local Extrema yes several maxes and mins (more later)Horizontal asymptotes noneVertical asymptotes noneEnd behavior None or DNE

Page 10: 1.3 Twelve Basic Functions Basic Function:y=x, linear …€¦ · Local Extrema every non integer value is both a local max and ... Which of the twelve basic functions makes up the

1.3 12 functions complete.notebook August 31, 2017

Basic Function: y=cos(x)Graph:

Domain (­∞,∞)Range [­1,1]Continuity ­ yesIncreasing/decreasing behavior  ­ more later Symmetry ­ yes about the y­axis ­ even functionBoundedness yes, above by y=1, below by y= ­1Local Extrema yes several maxes and mins (more later) Horizontal asymptotes noneVertical asymptotes noneEnd behavior none

Page 11: 1.3 Twelve Basic Functions Basic Function:y=x, linear …€¦ · Local Extrema every non integer value is both a local max and ... Which of the twelve basic functions makes up the

1.3 12 functions complete.notebook August 31, 2017

Basic Function: y=[x] or Int[x]Graph:

Domain (­∞,∞)Range all integersContinuity ­ no discontinuity at each integer value of xIncreasing/decreasing behavior constant on intervals of the form [k,k+1)Symmetry ­ noneLocal Extrema every non integer value is both a local max and a local minHorizontal asymptotes noneVertical asymptotes noneEnd behavior 

Page 12: 1.3 Twelve Basic Functions Basic Function:y=x, linear …€¦ · Local Extrema every non integer value is both a local max and ... Which of the twelve basic functions makes up the

1.3 12 functions complete.notebook August 31, 2017

Basic Function: y=1/(1+e­x)Graph:

Domain (­∞,∞)Range (0,1)Continuity ­ yesIncreasing/decreasing behavior inc (­∞,∞)Symmetry ­ noBoundedness yes, below by y=0, above by y=1Local Extrema noneHorizontal asymptotes yes, y=1 and y=0Vertical asymptotes none

End behavior 

Page 13: 1.3 Twelve Basic Functions Basic Function:y=x, linear …€¦ · Local Extrema every non integer value is both a local max and ... Which of the twelve basic functions makes up the

1.3 12 functions complete.notebook August 31, 2017

PIECEWISE FUNCTIONS

Ex.1Sketch a graph of the following piecewise functions.

if if

 

Which of the twelve basic functions makes up the  piecewise 

definition above?

Ex.2 

Sketch a graph of the following piecewise function:

if 

TRY Sketch a graph of the following piecewise function:

TRY Sketch a graph of the following piecewise function: