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### Period and Amplitude In Exercises $45-48,$ determ…

01:49
University of California, Berkeley
Problem 47

# Period and Amplitude In Exercises $45-48,$ determine the period and amplitude of each function.$$y=-3 \sin 4 \pi x$$

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## Video Transcript

Pixar amplitude is the value in front of our signs. That is all of it, that it's the absolute value of making street. It gives the okay. Our period is equal to pi. Over absolute Ali of the coefficient in front. Um, just for that gives me pie, actually, for pie. Um, we have four for pie, which gives me two pi over four pi, which gives me won over, kid.