1 . 化循环小数为分数:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1614b07a69a5c23ef6902a2770569c6.png)
___________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1614b07a69a5c23ef6902a2770569c6.png)
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2 . 法国数学家卢卡斯在研究一元二次方程
的两个根
不同幂的和时,发现了
,
,…,由此推算![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75149d101c708cf669271cad3ce936ca.png)
______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f4cdd6f27334444c1884876b9e4cfe6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0e8d8441014892f9ad3dbaad3f89774e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/62bdaecba44c33044ad3ad3e271d2884.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75149d101c708cf669271cad3ce936ca.png)
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3 . 若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd0cb64c92c6a01d89b11000b896535c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
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名校
4 . 设
,
为方程
的两个根,且
,则
的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6962df3ea2decdbca9a1c57cb99ebbf5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63fcf4f378df128fed4c474bf7b546e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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2024·全国·模拟预测
解题方法
5 . 已知正三棱锥
满足
,则该三棱锥侧面积的最大值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63397cda22cb1fad59cf966dfb588643.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7273edffdd59159d45e6c9429431d53f.png)
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6 . 如图,
中,
,
,
,
分别为
边上三点,
在边
上,且
和
均为等边三角形.则
边
上的高为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3f8eeeea1c9652cacce976f8129cf520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a7b5adfcac0f46a4cd19da4ebb4a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9f08273d339dc5ddbb89aa67bb8205e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6684304a7537da9517c889c9cbf90a48.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa5d0162d0ee5286bf0f1996d7180382.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb26f0163aa641213e18090181ae913e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d9763846b1131e1e3e2d741ad95d5bb0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/8/74cb4fcb-e1d4-4d28-a41b-1c497a2f39d4.png?resizew=156)
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7 . 如图,边长为3的正方形,
分别是
上两点,且
,连接
交于点
,若图中阴影部分面积是正方形面积的
,则
的周长为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d3b96dce1ec94eb90c243b2eddb78476.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f7e4ac63cde95545106ac7f59cb076ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04f8eebda19eded2b059774a8c2666c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94f6bddfec98926ac5e34c1187700b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bf31876698721a199c7c53c6b320aa86.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/822b3850f7df506efc1a592d57ec3a5d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/8/08729178-5c4c-4391-886d-12d4528777ef.png?resizew=161)
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8 . 如图,边长为6的正方形ABCD中,E在边AD上,且
,M为CD的中点,P在线段BM上,则EP的最小值为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be62ac0f5edb1eaebb5f491a7c30f97b.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/8/1639c18b-e11e-431b-9eb7-ffb022f6332d.png?resizew=150)
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9 . 已知关于
的方程
有两个不等实根,则实数
的取值范围为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/faa0e4be2f90a3f18a167aa1232a64e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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10 . 若关于x的不等式组
有且仅有四个正整数解,则实数
的取值范围为________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8462066ad77f3b45fc01504b1412deaa.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
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