Question

Which of the following statements are true about the graph of f (x) =1/4cos(x+pi/3)-1 Select all that apply.2 answers

Answer 1

`f(x)=Acos(B(x+C))+D`

Amplitude: A (A>1 is a stretch ; 0Period: 2π/B

Horizontal shift: C (Positive is to the left, negative to the rigth)

Vertical shift: D (positive is up, negative down)

For the given function:

`f(x)=(1)/(4)cos(x+(\pi)/(3))-1`

Amplitude: 1/4 (Compressed by a factor of 4)

Horizontal shift: π/3 left

Vertical shift: 1 unit down

Answer: true statements are: A, D