lim(x→π/3)sin(x-π/3)/(1-2cosx)
问题描述:
lim(x→π/3)sin(x-π/3)/(1-2cosx)
答
lim(x→π/3)sin(x-π/3)/(1-2cosx)=lim(x→π/3)cos(x-π/3)/(0+2sinx)=(3^0.5)/3
lim(x→π/3)sin(x-π/3)/(1-2cosx)
lim(x→π/3)sin(x-π/3)/(1-2cosx)=lim(x→π/3)cos(x-π/3)/(0+2sinx)=(3^0.5)/3