SOLUTION: Draw the graph of the function: g(x)= -cos(x/3)/3

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Question 547084: Draw the graph of the function: g(x)= -cos(x/3)/3
Answer by lwsshak3(11628) About Me  (Show Source):
You can put this solution on YOUR website!
Draw the graph of the function: g(x)= -cos(x/3)/3
Equation for graphing cos function: y=Asin(Bx-C), A=amplitude, Period=2π/B, Phase-shift=C/B
For given function: g(x)= -cos(x/3)/3=(-1/3)cos(x/3)
Amplitude=-1/3 (basic cos curve reflected around the x-axis)
B=1/3
Period=2π/B=2π/(1/3)=6π≈18.85
Phase-shift: none
see graph below as a visual check:
+graph%28+300%2C+300%2C+-20%2C+20%2C+-1%2C+1%2C+-cos%28x%2F3%29%2F3%29+