用洛必达法则求lim(x趋向1)lnx/x-1的极限,

问题描述:

用洛必达法则求lim(x趋向1)lnx/x-1的极限,

【lnx/(x-1)】求导得 (1/x)/1=1/x 则lim(x趋向1)lnx/(x-1)= lim(x趋向1)1/x=1