20-21高一·江苏·课后作业
1 . 已知
,
(
,
),求证:
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6c707f3f36d26a12b826891813b6fee9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef9e63e7fb730dfc4307400c64af3a9c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20849c00c47cbdc43f18d53341b6c4e5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b03b011f69dfc5262a3d82f64676739b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19f3fa0b40fb0d9b8c62e37316ab3b04.png)
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20-21高一·全国·课后作业
解题方法
2 . 证明下列恒等式:
(1)
;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b9b3eeb277124a3bae4a1d55cf5addb.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3827fb5a98d58aeb9214f3aa0c0c1a22.png)
您最近一年使用:0次