求值 :
(1)
;
(2)
.
(1)
![](https://img.xkw.com/dksih/QBM/2012/1/26/1570697827123200/1570697832521728/STEM/af754f7642914b2297bf32c6947b635d.png)
(2)
![](https://img.xkw.com/dksih/QBM/2012/1/26/1570697827123200/1570697832521728/STEM/bb8c459b240448df9448d9d1ccf2eed2.png)
12-13高一上·黑龙江鹤岗·期末 查看更多[1]
(已下线)2011-2012学年黑龙江省鹤岗一中高一上学期期末考试理科数学
更新时间:2016-12-01 13:35:49
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名校
【推荐1】已知
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![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9146fc0a63e5c14a8fa46573e60c07ba.png)
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