Question

(本小题满分16分，每小题8分)

解下列不等式：

(1) ；                              (2) log₇3x < log₇(x²-4)．

Answer

（1）

（2） x>4

【解析】

(1) 【解析】
3x+1≥ x-2，·················································································· 5分

．············································································ 8分

(2) 【解析】
·················································································· 4分

分别得：x > 0；x <-2或x > 2；x <-1或x > 4，································· 6分

解得：x > 4．·········································································· 8分