问题
选择题
已知曲线f(x)=xn+1(n∈N*)与直线x=1交于点P,若设曲线y=f(x)在点P处的切线与x轴交点的横坐标为xn,则log2011x1+log2011x2+…+logx2010的值为[ ]
A.-log20112010-2
B.-1
C.log20112010-1
D.1
答案
答案:B
已知曲线f(x)=xn+1(n∈N*)与直线x=1交于点P,若设曲线y=f(x)在点P处的切线与x轴交点的横坐标为xn,则log2011x1+log2011x2+…+logx2010的值为[ ]
A.-log20112010-2
B.-1
C.log20112010-1
D.1
答案:B