Question

Find an equation of the sine function whose graph is shown below

f(x)=_____sin------x
(the sin part, is a fraction)

Answer 1

y=A*sin(x*2pi/T)

A=max(y)=2
T=4pi

y=A*sin(x*2pi/T)=2*sin(x*2pi/4pi) = 2*sin(x/2)
y=2*sin(x/2) - is answer