- #1

EddieLP

- 5

- 0

**My problem is to find amplitude, period, horizontal shift, vertical translation, step and then graph of:**

y= 2 - (1/3) cos ( πx + (3π/2) ) , -1/4 ≤ x ≤ 15/4

**Using the formula:**

y = A cos ( Bx + C) + D

A = 2

B = π

C = 3/2

D = 0

Amplitude: |A| = 1/3

Period: ((2π) / |B|) = 2

Horizontal Shift: -C/B = (3/(2π))

Vertical Translation: D = 0

Step: ((2π)/2)/B = 1