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f(x)=sinx+根号3cosx的值域是?
人气:396 ℃ 时间:2019-10-09 12:23:23
解答
f(x)=2(1/2*sinx+√3/2*cosx)
=2(sinxcosπ/3+cosxsinπ/3)
=2sin(x+π/3)
-1
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