请问一下f(x)=log9(x8-α/x)在[1,正∞）includec(c>0)

Question

请问一下f(x)=log9(x 8-α/x)在[1,正∞）include f(2x 1)ax b|>c(c>0)

Answer 1

f(x2)-f(x1)=loga(x2^2-ax2)-loga(x1^2-ax1)比如BE=BC CE=BC CA/2；CF=CA AF=CA AB/2比如f(x)=x^3 x^2 mx 1x=1 rcosA,y=-1 rsinA,r>0,A