lim x趋向于无穷 (arctanx)/x

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limx趋向于无穷(arctanx)/xlimx趋向于无穷(arctanx)/xlimx趋向于无穷(arctanx)/xlimx趋向于无穷(arctanx)/x=0(arctanx)/x:1/x→0,

lim x趋向于无穷 (arctanx)/x
lim x趋向于无穷 (arctanx)/x

lim x趋向于无穷 (arctanx)/x
lim x趋向于无穷 (arctanx)/x=0

(arctanx)/x:1/x→0,arctanx→∏/2,极限为0