lim x→-∞ arctanx/2求极限
人气:445 ℃ 时间:2020-02-16 07:03:52
解答
lim x→-∞ arctanx = - π/2
lim x→-∞ arctan(x/2)= - π/2
lim x→-∞ (arctanx)/2= - π/4?极限直接由arctanx函数图象可以观察出来
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