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lim(1-cosax/sinx^2)(a为常数)的极限.x趋向于o.
人气:131 ℃ 时间:2020-01-29 01:00:42
解答
lim(1-cosax/sinx^2)=limasinax/2xcosx^2)=lima^2sinax/2axcosx^2)=a^2/2
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