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X趋近于零(x-sinx)/(x+sinx)的极限
人气:210 ℃ 时间:2020-04-10 14:04:26
解答
lim(x->0)(x-sinx)/(x+sinx)
= lim(x->0) ( 1 - sinx /x ) / ( 1 + sinx /x)
= (1-1)/(1+1) = 0
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