高中数学代数与函数一其他练习题140
题目内容

下列函数中,最小值是4的是

2021-07-21

A.y=x+http://picflow.koolearn.com/upload/papers/g02/20110524/20110524161750862926.gif

B.y=2http://picflow.koolearn.com/upload/papers/g02/20110524/201105241617508621304.gif

C.y=sinx+http://picflow.koolearn.com/upload/papers/g02/20110524/201105241617509081028.gif,x∈[0,http://picflow.koolearn.com/upload/papers/g02/20110524/20110524161750908944.gif]

D.y=2(http://picflow.koolearn.com/upload/papers/g02/20110524/20110524161750955980.gif

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