证明当x趋近于0时arccotx除以x的极限等于1
问题描述:
证明当x趋近于0时arccotx除以x的极限等于1
答
错了,应该是
lim(x→0)(arctanx/x)
= lim(x→0)(t/tant) (x = tant)
= lim(x→0)(t/sint)*cost
= 1*1 = 1.