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2. The graph of y = cosh a is (a) concave up on its entire domain because y" = coshr > 0 for all r € (-0,a (b) concave down on its entire domain because y" = - cosh z < 0 for all r € (– (c) increasing on its entire domain because y' = sinh r > 0 for all r € (-0, 0) (d) decreasing on its entire domain because y' = sinha < 0 for all æ € (-x, 0) (e) None of the above.

2. The graph of y = cosh a is (a) concave up on its entire domain because y" = coshr > 0 for all r € (-0,a (b) concave down on its entire domain because y" = - cosh z < 0 for all r € (– (c) increasing on its entire domain because y' = sinh r > 0 for all r € (-0, 0) (d) decreasing on its entire domain because y' = sinha < 0 for all æ € (-x, 0) (e) None of the above.

Calculus: Early Transcendentals
Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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2. The graph of y = cosh a is (a) concave up on its entire domain because y" = cosh r > 0 for all r E (-0, 00). (b) concave down on its entire domain because y" = - cosh a < 0 for all æ E (-0, 00). (c) increasing on its entire domain because y' = sinh r > 0 for all r € (-x, 0). (d) decreasing on its entire domain because y' = sinh r < 0 for all r € (-0, 00) (e) None of the above.
Transcribed Image Text:2. The graph of y = cosh a is (a) concave up on its entire domain because y" = cosh r > 0 for all r E (-0, 00). (b) concave down on its entire domain because y" = - cosh a < 0 for all æ E (-0, 00). (c) increasing on its entire domain because y' = sinh r > 0 for all r € (-x, 0). (d) decreasing on its entire domain because y' = sinh r < 0 for all r € (-0, 00) (e) None of the above.
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