Question

Graph the function f(x) = cos(2x) +1

Answer 1

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Answer 2

See attachment

Step-by-step explanation

We know how to graph

`f(x) = \cos(x)`

The given function

`f(x) = \cos(2x) + 1`

is obtained by transforming the graph of

`f(x) = \cos(x)`

The period is π.

Hence we graph cos(x) such that it completes one cycle after every π units and then shift this graph up by 1 unit to obtain

`f(x) = \cos(2x) + 1`

The amplitude is 1.

Hence it's range is

0≤y≤2

See attachment.