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2. 在等比數(shù)列{an}中,若是方程x2-11x+9=0的兩根,則的值是

試題詳情

1. 已知函數(shù),,那么集合中所含元素的個(gè)數(shù)是

A. 0個(gè)   B. 1個(gè)    C. 0或1個(gè)    D. 0或1或無(wú)數(shù)個(gè)

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20、(5分)

                                                                            

                                                                         

                                                                        

 

 

 

座位號(hào)

 

 

 

 

 

 

 

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19、(4分)

(1)將____       __           改為_(kāi)_____                  ;

(2)將_____         _         改為_(kāi)_____                 ;

(3)將_____        _          改為_(kāi)____                  ;

(4)將______                  改為_(kāi)_____                  。

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18、(5分)

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

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17.(6分)

                                                                         

                                                                          

                                                                           

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16.(6分)

                                                                         

                                                                           

                                                                          

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15.(6分)

                                                                            

                                                                             

                                                                          

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14.(4分)

                                                                              

                                                                                 

                                                                                   

 

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13.(6分)

                                                                         

                                                                       

                                                                      

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