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问题: 求极限: lim In ( 1 x ) / x

lim
x-0

解答:

lim In ( 1+x ) / x
x→0
=lim[(1/x)*ln(1+x)]
x→0
=lim [ln(1+x)^(1/x)]
x→0
=ln[lim(1+x)^(1/x)]
x→0
=lne
=1.