高中数学代数与函数一其他练习题3
题目内容

用反证法证明命题“http://picflow.koolearn.com/upload/papers/g02/20111018/20111018155034343887.gif+http://picflow.koolearn.com/upload/papers/g02/20111018/20111018155034359883.gif是无理数”时,假设正确的是

2021-07-12

A.假设http://picflow.koolearn.com/upload/papers/g02/20111018/20111018155034359878.gif是有理数

B.假设http://picflow.koolearn.com/upload/papers/g02/20111018/20111018155034390875.gif是有理数

C.假设http://picflow.koolearn.com/upload/papers/g02/20111018/20111018155034406878.gifhttp://picflow.koolearn.com/upload/papers/g02/20111018/20111018155034437875.gif是有理数

D.假设http://picflow.koolearn.com/upload/papers/g02/20111018/20111018155034437878.gif+http://picflow.koolearn.com/upload/papers/g02/20111018/20111018155034484875.gif是有理数

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