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Mathematics 9 Online
OpenStudy (anonymous):

Identify the maximum and minimum values of the function y = 10 cos x in the interval [-2π, 2π]. Use your understanding of transformations, not your graphing calculator.

OpenStudy (cwrw238):

the minimum and maximum of y = cos x is -1 and 1. the coefficient 10 stretches the graph by factor 10 parallel to the y-axis.

OpenStudy (anonymous):

So the minimum and maximum are -10 and 10 because it is the coefficient?

OpenStudy (cwrw238):

yes

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