Senior high school mathematics compulsory one page 83 group B third problem solving process?
(1) monotonically increasing as the difference method: let x 1 < x2, then f (x1)-f (x2) = a-2/(2x1+1)-a+2/(. ∴ 2 x 1-2 x2 < 0 and 2 x 1+65438 then f(0)=0 gives a- 1=0 a= 1. When a= 1, f (x) =1-2/2x+1= (2x-1