Question 197099
1) y= 2sin(1/8)x
amplitude: 2
period:16π
coordinates
X: {0,(1/2)}; {(π/10),0} ; {(π/5),(-1/2)} ; {(3π/10),0} ; {(2π/5), (1/2)} 
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amplitude: correct
period: correct
Coordinates:
(0,0), (8pi/6, 1), (8pi/4, sqrt(2)), (8pi/3,sqrt(3)), (8pi/2, 2),...
(8pi, 0), (12pi,-2), (16pi,0)
etc. 
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Cheers,
Stan H.