·找数规律-1/2,1/3,-1/10,1/15,-1/26,1/35,...第七数为( 谢
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![·找数规律-1/2,1/3,-1/10,1/15,-1/26,1/35,...第七数为( 谢](/uploads/image/z/8982860-68-0.jpg?t=%C2%B7%E6%89%BE%E6%95%B0%E8%A7%84%E5%BE%8B-1%2F2%2C1%2F3%2C-1%2F10%2C1%2F15%2C-1%2F26%2C1%2F35%2C...%E7%AC%AC%E4%B8%83%E6%95%B0%E4%B8%BA%EF%BC%88+%E8%B0%A2)
·找数规律-1/2,1/3,-1/10,1/15,-1/26,1/35,...第七数为( 谢
·找数规律-1/2,1/3,-1/10,1/15,-1/26,1/35,...第七数为(
谢
·找数规律-1/2,1/3,-1/10,1/15,-1/26,1/35,...第七数为( 谢
-1/50
-1/2=-1/(1*1+1)
1/3=1/(2*2-1)
-1/10=1/(3*3+1)
1/15=1/(4*4-1)
...
1/35=1/(6*6-1)
-1/50=-1/(7*7+1)
-1/58
-1/10=-1/(2+8)
-1/26=-1/(10+16)
-1/58=-1/(26+32)
1/3=1/1*3
1/15=1/3*5
1/35=1/5*7
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·找数规律-1/2,1/3,-1/10,1/15,-1/26,1/35,...第七数为( 谢