# Trig/Math

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3. f(x)=1/3sin(2/3x-π/4)+4
Find the amplitude, period, phase shift, and vertical shift of the function please.

• Trig/Math -

Take a look at this,and memorize it.

f(x)=Amplitude*sin(2PI*time/period-shiftToRight)+vertical shift

I am bothered by the use of x as a variable. Normally, we use t for time. If x here represents distance, then period has NO meaning. Period applies to time varying signals.

http://www.regentsprep.org/Regents/math/algtrig/ATT7/phaseshift.htm

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