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lim(x→π/3)sin(x-π/3)/(1-2cosx)
人气:150 ℃ 时间:2020-10-01 23:50:46
解答
lim(x→π/3)sin(x-π/3)/(1-2cosx)=lim(x→π/3)cos(x-π/3)/(0+2sinx)=(3^0.5)/3
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