Question

Choose the graph of the following function:

f(x) = 2 cos(3x)
Graph A
-4
Graph B
4
3
MAAILMA

Answer 1

B on edge

Explanation:

Answer 2

Graph B

Explanation:

Let take a look of original graph, cos(x)

The amplitude of that graph is 1.

The ampictude of both graphs is 2 so that means the amplitude transformation, 2 has been applied.

We need to find the x intercept.

`\cos(0 ) = 1`

so

`2 \cos(3(0)) = 2`

The graph should intersecting at point

0,2 so the answer is

Graph B