Chapter 1 Functions and Their Graphs 1 3
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Chapter 1 Functions and Their Graphs 1. 3 Properties of Functions Copyright © 2015, 2011, 2007 Pearson Education, Inc. 1
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For an even function, for every point (x, y) on the graph, the point (-x, y) is also on the graph. Copyright © 2015, 2011, 2007 Pearson Education, Inc. 3
So for an odd function, for every point (x, y) on the graph, the point (-x, -y) is also on the graph. Copyright © 2015, 2011, 2007 Pearson Education, Inc. 4
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Determine whether each graph given is an even function, an odd function, or a function that is neither even nor odd. Even function because it is symmetric with respect to the y-axis Neither even nor odd because no symmetry with respect to the yaxis or the origin. Odd function because it is symmetric with respect to the origin. Copyright © 2015, 2011, 2007 Pearson Education, Inc. 6
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Odd function symmetric with respect to the origin Even function symmetric with respect to the y-axis Since the resulting function does not equal f(x) nor –f(x) this function is neither even nor odd and is not symmetric with respect to the y-axis or the origin. Copyright © 2015, 2011, 2007 Pearson Education, Inc. 8
G N SI EA R CR EA SI CONSTANT N G IN C DE Copyright © 2015, 2011, 2007 Pearson Education, Inc. 9
Where is the function increasing? Copyright © 2015, 2011, 2007 Pearson Education, Inc. 10
Where is the function decreasing? Copyright © 2015, 2011, 2007 Pearson Education, Inc. 11
Where is the function constant? Copyright © 2015, 2011, 2007 Pearson Education, Inc. 12
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There is a local maximum when x = 1. The local maximum value is 2 Copyright © 2015, 2011, 2007 Pearson Education, Inc. 19
There is a local minimum when x = – 1 and x = 3. The local minima values are 1 and 0. Copyright © 2015, 2011, 2007 Pearson Education, Inc. 20
(e) List the intervals on which f is increasing. (f) List the intervals on which f is decreasing. Copyright © 2015, 2011, 2007 Pearson Education, Inc. 21
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Find the absolute maximum and the absolute minimum, if they exist. The absolute maximum of 6 occurs when x = 3. The absolute minimum of 1 occurs when x = 0. Copyright © 2015, 2011, 2007 Pearson Education, Inc. 24
Find the absolute maximum and the absolute minimum, if they exist. The absolute maximum of 3 occurs when x = 5. There is no absolute minimum because of the “hole” at x = 3. Copyright © 2015, 2011, 2007 Pearson Education, Inc. 25
Find the absolute maximum and the absolute minimum, if they exist. The absolute maximum of 4 occurs when x = 5. The absolute minimum of 1 occurs on the interval [1, 2]. Copyright © 2015, 2011, 2007 Pearson Education, Inc. 26
Find the absolute maximum and the absolute minimum, if they exist. There is no absolute maximum. The absolute minimum of 0 occurs when x = 0. Copyright © 2015, 2011, 2007 Pearson Education, Inc. 27
Find the absolute maximum and the absolute minimum, if they exist. There is no absolute maximum. There is no absolute minimum. Copyright © 2015, 2011, 2007 Pearson Education, Inc. 28
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a) From 1 to 3 Copyright © 2015, 2011, 2007 Pearson Education, Inc. 35
b) From 1 to 5 Copyright © 2015, 2011, 2007 Pearson Education, Inc. 36
c) From 1 to 7 Copyright © 2015, 2011, 2007 Pearson Education, Inc. 37
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2 -4 3 -25 Copyright © 2015, 2011, 2007 Pearson Education, Inc. 40
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