determine the amplitude, period, and phase shift of the function. graph the function. y = - 3 cos (2x - π/2)…
determine the amplitude, period, and phase shift of the function. graph the function. y = - 3 cos (2x - π/2) the amplitude is . (simplify your answer.)
Answer
Explanation:
Step1: Recall amplitude formula
For a cosine function of the form $y = A\cos(Bx - C)$, the amplitude is given by $|A|$. In the function $y=-3\cos(2x - \frac{\pi}{2})$, $A=-3$.
Step2: Calculate amplitude
$|A|=|-3| = 3$.
Answer:
3