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Mathematics 7 Online
OpenStudy (anonymous):

..

OpenStudy (anonymous):

amp is abs(a) = 3

OpenStudy (anonymous):

6, becouse cos x is abounded function, which goes from -1 to 1 . So max value 3, min value -3. Amplitude = 6

OpenStudy (anonymous):

Amplitude is from the middle of graph to the max or min It is most def 3

OpenStudy (anonymous):

Probably @rainbow22 is right...

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