求助f(x)=1g(x)=x^0bf(x)=x-1g(x)=x^2/x-1a(a2-2ab-b2)-b(2a2ab-b2)an=2a(n-1)(n2)/n(n1)(n≥2,n∈n*)BE=BCCE=BCCA/2；CF=CAAF=CAAB/2

Question

求助f(x)=1 g(x)=x^0 b f(x)=x-1 g(x)=x^2/x-1a(a2-2ab-b2)-b(2a2 ab-b2)
an=2a(n-1) (n 2)/【n(n 1)】(n≥2,n∈n*)BE=BC CE=BC CA/2；CF=CA AF=CA AB/2

Answer 1

x2^2-ax2)/(x1^2-ax1)>0 比方0 (BC CA AB)/2比方2^(x^2 x)=