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(文科)曲线6ec8aac122bd4f6e在点(1,6)处的切线方程为                (    )

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4.(理科)已知函数6ec8aac122bd4f6e 在点6ec8aac122bd4f6e处连续,则6ec8aac122bd4f6e的值是 (    )

A.2                           B.3                            C.-2                          D.-4

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C.沿x轴向右平移6ec8aac122bd4f6e个单位                      D.沿x轴向左平移6ec8aac122bd4f6e个单位

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A.  沿x轴向左平移6ec8aac122bd4f6e个单位                    B.沿x轴向右平移6ec8aac122bd4f6e个单位

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3.我们知道,函数6ec8aac122bd4f6e的图象经过适当变换可以得到6ec8aac122bd4f6e的图象,则这种变换可以是                                                              (    )                                                         

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           A.6ec8aac122bd4f6e                   B.6ec8aac122bd4f6e                   C.6ec8aac122bd4f6e               D.6ec8aac122bd4f6e

(文科)已知向量a= (-3 ,2 ) , b=(x, -4) , 若a//b,则x=                      (    )

A  .6              B .5             C .4          D.7

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2.(理科)复数6ec8aac122bd4f6e等于                                                                               (    )

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       A.(-1,1)            B.(0,a)              C.(0,1)                   D.6ec8aac122bd4f6e

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1.已知6ec8aac122bd4f6e为        (    )

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(3)1:3  ; 80.2Kj

 

 

 

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