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state the amplitude and period and phase shift of the function y=-3cos(3x+3pi/2)

Mathematics
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http://www.wmueller.com/precalculus/families/1_71.html this will show you how to find all 3 very simple process
hmm ok
still confused though :(

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Other answers:

the amplitude of this function is the number in front of cos its always positive its 3 the period is 2pi/(the number with x) 2pi/3 the phase shift is the number after x the function was moved left 3pi/2
amp=3 period 2pi/3 phase shift= 3pi/2 that right? @etemplin
yes, except phase shift should be either negative or specified "to the left"
THANKS!
@etemplin so for the function y=3sin(3x/2-pi/4)...the amp is 3, period is 3pi/2 and phase shift pi/4?

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