Use transformation (-2pie,2pie) with y=2cos(x)-1

See attachment

Step-by-step explanation:

We want to graph

on the interval (-2π, 2π)

First we graph

Then we stretch vertically by a factor of 2 and shift down 1 unit.

Since the amplitude is 2 and the graph is shifted down 1 unit, the range of the transformed graph is

The graph is shown in the attachment

c

step-by-step explanation:

5+2x=a

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