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数学
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lim x→0 √(1-cos x)/x的极限
人气:168 ℃ 时间:2020-02-03 17:11:54
解答
这个极限不存在,左极限不等于右极限求过程这个很明显,当x→0-时,√(1-cos x)/x<0,当x→0+时,√(1-cos x)/x>0,
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