(1+1/1+3)*(1+1/2*4)*(1+1/3*5)*.*(1+1/98*100)*(1+1/99*101)规律:1+1/1*3=1*3+1/1*3=4/1*3=2^2/1*3 1+1/3*4=2*4+1/2*4=9/2*4=3^2/2*4 1+1/3*5=3*5+1/3*5=16/3*5=4^2/3*5 .根据规律,可猜测:1+1/(2n-1)*(2n+1)=____________(n为整

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