Question 427310
Discuss how the 1/2 part affects the graphs of y=1/2cosx and y=cos1/2x 
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In the form y = acos(bx) the a determines the amplitude;
the b determines the period.
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Your Problem:
y = (1/2)cos(x)
The amplitude of the cos is normally "1".
Because of the !/2 the amplitude will be "1/2".
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y = cos((1/2)x)
The period of the cos is normally 2pi
Because of the 1/2 the period = (2pi)/(1/2) = 4pi
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Cheers,
Stan H.
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