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OpenStudy (mathguy5):
I got 2 for the answer. Can someone verify please http://prntscr.com/bkidmt
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OpenStudy (dinamix):
i think its y = 2 cos(x)
OpenStudy (mrnood):
what is the question??
OpenStudy (mrnood):
the wave has an amplitude of 2 and a period of 3 its phase is 0 so it cannot be as @dinamix since cos x has a period of 2 pi
OpenStudy (mrnood):
what is the question??
OpenStudy (mathguy5):
use the graph to find the value of f(3)
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OpenStudy (mrnood):
OK - got to the value 3 on the x axis - then read up to the point on the graph 2 is correct
OpenStudy (mrnood):
the equation is y= 2 cos (pi x/3)
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