若是定义在上的增函数,满足, 且. (1)求的值; (2)求不等式

是定义在上的增函数,满足

1的值;

2求不等式的解集

答案

解:(1

    ∴  ……………………………………………………5

2

   

上的增函数

  不等式的解集   ………………12

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