设f(sin x)=cos2x+1,求f(cos x).
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求一道高数里的函数题f(sin x)=cos2x+1,求f(cos x).
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f(x)=(1+cos2x)/[4sin(pai/2+x)]-asin(x/2)cos(pai-x/
设f(x)=(sin^4 x-cos^4 x-5)/(cos2x+2). (a)证明f(x)= 3/(2 sin^2 x
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设函数f(x)=cos(2x-π/3)+cos2x-1,若x€[0,π/2],求f(x)的最大值及相应的x值
设f(tanx)=cos2x,求f(x)
设f(tanx)=cos2x,求f(x)如何解答
设函数f(x)=cos(2x+π/3)+1/2-1/2cos2x