lim(x+a^x)^1/x=?x趋向于0 (a>0)

问题描述:

lim(x+a^x)^1/x=?x趋向于0 (a>0)

∵lim(x->0)[ln(x+a^x)/x]=lim(x->0)[(1+lna*a^x)/(x+a^x)] (0/0型极限,应用罗比达法则) =(1+lna*1)/(0+1) =1+lna ∴原...