p=a/(a+1)+b/(b+1) =(a+b+2ab)/(a+1)(b+1)因为ab=1所以p=(a+b+2)/(a+1)(b+1)q=1/(a+1)+1/(b+1) =(a+b+2)/(a+1)(b+1)=p所以p=q
由ab=1,所以a=1/b,b=1/ap=a/(a+1)+b/(b+1)=1/(1+1/a)+1/(1+1/b)=1/(1+b)+1/(1+a)=q 说明一下:是将1/a换成b,将1/b换成a,得的