Asked by JH
If g(x)=cos2x. Find g(pi/2) and g(-x)
Answers
Answered by
oobleck
g(π/2) = cos(2*π/2) = cos(π) = -1
g(-x) = cos(-2x) = cos(2x)
since cos(-x) = cos(x)
g(-x) = cos(-2x) = cos(2x)
since cos(-x) = cos(x)
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