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数学
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证明tgx-sinx=0(x) x趋向0
人气:297 ℃ 时间:2020-06-14 10:25:27
解答
cosx=sinx/tanx
当x→0时,cosx→1
即sinx/tanx→1
即sinx=tanx
即tanx-sinx=0
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