4.已知的最大值是 ( ) A.10 B.12 C.13 D.14 查看更多

 

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已知的最大值是                                  

A.10                          B.12                          C.13                          D.14

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已知的最大值是                                  

A.10                          B.12                          C.13                          D.14

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已知的最小值是5,则z的最大值是

                                                                        (    )

    A.10             B.12             C.14             D.15

 

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.已知的最小值是5,则z的最大值是

                                                                                                                              (    )

       A.10                      B.12                      C.14                      D.15

 

 

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已知=4,那么+8y-5的最大值是

[  ]

A.10
B.11
C.12
D.15

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