CPM Homework Help : INT3 Problem 10-147

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10-147.

Graph two complete cycles of each function.

$y = - 2 \operatorname { cos } ( x + \frac { \pi } { 2 } )$
Hint (a):
What is the amplitude? Where is the locator point? What is the orientation? What is the period?
Answer (a):

$y = \operatorname { sin } ( x - \frac { \pi } { 2 } )$
Hint (b):
See part (a).

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