名校
解题方法
1 . 设
.
(1)若
都是锐角,且满足
,求证:
和
中至少有一个是方程
的解;
(2)求方程
在区间
上的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5b5761cf39167d28827a635c3d1b267.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e50eedbf5aa992c26a645f7968c04ad.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9cb981a353e01806c9e18914247e528.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6581916f5a65edfea257c804efee007e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e1a4f3d0f4f608ea4e8481843d19429.png)
(2)求方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e1a4f3d0f4f608ea4e8481843d19429.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a531b9769bfba66a10139b153f09307c.png)
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真题
2 . 求方程
在
上的解.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f60a981476baa1d1dfdfc3c0a67fd51d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a531b9769bfba66a10139b153f09307c.png)
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3 . (1)已知函数
,求满足
的解
.
(2)已知
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be86dd5af23f72d77be8fb21bb57bdfe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3047d4ab078dafc06c047bcbf0a6ffaf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(2)已知
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8bf798152b5e947a4e5d671932b9494.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5424762b2cec18c8371bbf6597c42d2b.png)
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4 . 设
.
(1)若锐角
满足
,问:
是否为方程
的解?为什么?
(2)求方程
在区间
上的解集.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eed8cd3a2a92fd6b95700fd0a9bc5d3e.png)
(1)若锐角
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e956fc04407b02700f649b9f1cbcad3b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c24095e409b025db711f14be783a406c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e9e7131919449b3d2ebad852a1d78ff.png)
(2)求方程
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e9e7131919449b3d2ebad852a1d78ff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e84e89ade5594c4665e43a320ca9f21.png)
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名校
5 . 求方程
在区间
上的解.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/efe1a51aad10c7d50a6be0facbf4e762.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/261f9fd5f3d2a67143cdf65cca376c73.png)
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