题目内容

函数的图象与直线没有交点,求k的取值范围.

解:列表:

1

2

4

8

8

4

2

1

1

2

4

8

分别描点、连线得函数的图象如图所示.                                                                                                                                                                                                                     

                                                                                                                                                                                                           

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