求lim(x趋于∞)x[ln(x+1)-lnx] 等于多少 求详解

问题描述:

求lim(x趋于∞)x[ln(x+1)-lnx] 等于多少 求详解

=lim x*ln[(x+1)/x]
=lim x*ln(1+1/x)
=lim ln[(1+1/x)^x]
=ln e
=1