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Mathematics 15 Online
OpenStudy (anonymous):

Help please! :) y=2sin(3pi t) what is the period and frequency?

OpenStudy (psymon):

well, you normally have a formof Asin(Bx-C). The period of the function is the normal period divided by b. So in this case, b for you is 3pi. We know this is b because it is the number that iswith the variable. The normal period of sin is 2pi, so2pi/3pi just equals (2/3), so that is your period. Frequency is basically the reciprocal of the period, so (3/2) thistime.

OpenStudy (anonymous):

Thank you! :)

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