Problem 108 of 7
Choose the equivalent form that reveals amplitude and phase shift for function 4cos(2x + pi/2).
Using a hint is okay. It just tells the trainer to give you a little more review.
Hidden until you reveal it.
match form to zeros, asymptotes, domain, period, or growth rate.
Hidden until you reveal it.
Match form to zeros, asymptotes, domain, period, or growth rate.
Enter your answer
Your answer is equivalent to the expected form.
Walkthrough
Full solution stays hidden until you ask for it.
1. Identify which feature the question asks for.
2. Choose the algebraic form that makes that feature directly visible.
3. State the feature from that form.
Use the worked steps, then substitute the final answer back into the original relationship to confirm it satisfies the prompt.
Choosing an equivalent form that hides the requested feature.