命题q: “” 是否存在实数,使“命题”为真命题,若

 

        命题q: “
是否存在实数,使“命题”为真命题,若存在,求的取值范围,若不存在,请说明理由。

答案

 

        命题q: “
是否存在实数,使“命题”为真命题,若存在,求的取值范围,若不存在,请说明理由。

解:为真,

命题q: “为真

     

由以上可得:

“命题”为真命题,即命题q 命题p都是真命题

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