高中数学代数与函数一其他练习题2
题目内容

用数学归纳法证明等式 http://picflow.koolearn.com/upload/papers/20140823/201408232115229931619.png时,验证 http://picflow.koolearn.com/upload/papers/20140823/20140823211523009357.png,左边应取的项是 (  )

2021-07-12

A.http://picflow.koolearn.com/upload/papers/20140823/20140823211523024291.png

B.http://picflow.koolearn.com/upload/papers/20140823/20140823211523040501.png

C.http://picflow.koolearn.com/upload/papers/20140823/20140823211523056573.png

D.http://picflow.koolearn.com/upload/papers/20140823/20140823211523087648.png

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