想知道：y=(x2)/(3x-1)AB=AC=3COS=1/9loga[(x2^2-ax2)/(x1^2-ax1)]>0ADBECF=(ABBCCA)(BC/2CA/2AB/2)

Question

想知道：y=(x 2)/(3x-1)AB=AC=3COS=1/9
loga[(x2^2-ax2)/(x1^2-ax1)]>0AD BE CF=(AB BC CA) (BC/2 CA/2 AB/2)

Answer 1

∠DAB=60°,AD=AA1B我们讨论的范围是x<0\假设1n（M N）=1nM 1nM假设∠DAB=60°,AD=AA1