高中数学代数与函数一其他练习题10
题目内容

如果n是正偶数,则C http://picflow.koolearn.com/upload/papers/20140823/20140823133024045199.gif+C http://picflow.koolearn.com/upload/papers/20140823/20140823133024060192.gif+…+C http://picflow.koolearn.com/upload/papers/20140823/20140823133024138218.gif+C http://picflow.koolearn.com/upload/papers/20140823/20140823133024154196.gif=(   )

2021-07-12

A.2http://picflow.koolearn.com/upload/papers/20140823/20140823133024325178.gif

B.2http://picflow.koolearn.com/upload/papers/20140823/20140823133024341195.gif

C.2http://picflow.koolearn.com/upload/papers/20140823/20140823133024357198.gif

D.(n-1)2http://picflow.koolearn.com/upload/papers/20140823/20140823133024341195.gif

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