找规律1/3,1/15,1/35,1/63

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找规律1/3,1/15,1/35,1/63

找规律1/3,1/15,1/35,1/63
找规律1/3,1/15,1/35,1/63

找规律1/3,1/15,1/35,1/63
1/3=1/1*3
1/15=1/3*5
1/35=1/5*7
1/63=1/7*9
……
1/(2n-1)(2n+1)

1/(1×3),1/(3×5),1/(5×7),1/(7×9)

1/(1*3),1/(3*5)1/(5*7),1/(7*9)

1/(1*3),1/(3*5)1/(5*7),1/(7*9)

1/4n平方-1