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limx→∞[﹙x2+1﹚/﹙x3+x﹚]/﹙3+cosx﹚极限计算
人气:190 ℃ 时间:2020-06-16 02:09:59
解答
limx→∞[﹙x2+1﹚/﹙x3+x﹚]/﹙3+cosx﹚
=lim(1/x+1/x^3)/(1+1/x^2)/(3+cosx)
=lim 0 /1/(3+cosx)
=0
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