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f(X)=Cos2X-Sin2X,求f(0.45)
人气:474 ℃ 时间:2020-06-02 19:42:40
解答
f(x)=(2^0.5)*[sin(0.25π-2x)]
f(0.45)=(2^0.5)*[sin(0.25π-0.9)]=-0.131
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