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Asked by Bobby

2cos(1/2x)-cos(1/2x)=0 , where 0<x<2pi
determine the complete solution for the equation
8 years ago

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Answered by Steve
huh? If you let u=cos(1/2x) then you just have

2u-u=0
clearly u=0
when is cos(1/2x)=0?
8 years ago
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