Question 976515
Give the following amplitude and the period of each of the following: (a) y=1/2sin3x (b) y=3cos1/2x 
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Equation for sin function: y=Asin(Bx-C), A=ampiltude, period=2π/B
For:  (a) y=1/2sin3x 
B=3
Period: 2π/B=2π/3
Amplitude=1/2
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Equation for cos function: y=Acos(Bx-C), A=amplitude, period=2π/B
For: b) y=3cos1/2x  
B=1/2
Period: 2π/B=2π/(1/2)=4π
Amplitude=3