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f(x)=sin(2x-π/6)-1 增减区间
人气:434 ℃ 时间:2020-10-01 08:56:40
解答
依题意

-π/2+2kπ-π/2+2kπ<=2x-π/6<=π/2+2kπ先移向 把-π/6移到不等式两边-π/3+2kπ<=2x<=2π/3+2kπ然后两边不等式1/2即可
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