用数学归纳法证明(n+1)(n+2)······(n+n)=2^n·1·3·····(2n-1),从k到k+1,左边需要增乘的代A.2k+1 B.2(2k+1) C.(2k+1)/(k+1) D.(2k+3)/(k+1)

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用数学归纳法证明(n+1)(n+2)······(n+n)=2^n·1·3·····(2n-1),从k到k+1,左边需要增乘的代A.2k+1 B.2(2k+1) C.(2k+1)/(k+1) D.(2k+3)/(k+1)
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用数学归纳法证明(n+1)(n+2)······(n+n)=2^n·1·3·····(2n-1),从k到k+1,左边需要增乘的代A.2k+1 B.2(2k+1) C.(2k+1)/(k+1) D.(2k+3)/(k+1)
用数学归纳法证明(n+1)(n+2)······(n+n)=2^n·1·3·····(2n-1),从k到k+1,左边需要增乘的代
A.2k+1 B.2(2k+1) C.(2k+1)/(k+1) D.(2k+3)/(k+1)

用数学归纳法证明(n+1)(n+2)······(n+n)=2^n·1·3·····(2n-1),从k到k+1,左边需要增乘的代A.2k+1 B.2(2k+1) C.(2k+1)/(k+1) D.(2k+3)/(k+1)

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