请问：y=log0.5(2x2-3x 1)x=1 rcosA,y=-1 rsinA,r>0,A

题目

请问：y=log0.5(2x2-3x 1)x=1 rcosA,y=-1 rsinA,r>0,A
BBE=BC CE=BC CA/2f(x)=loga(x^2-ax)在(-1/2,0)-1/2

答案

AD=AB BD=AB BC/2AD BE CF=(AB BC CA) (BC/2 CA/2 AB/2)比方limx*sin(1/x) 比方AD=AB BD=AB BC/2