1 . 在平面直角坐标系
中,点
,连
,若线段
分别交曲线
于点
(异于点
),若
,则
的值为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7ee31829d0d4d5f779a957d7df8058ab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/772e230c06bb4a08780f2d78273f379a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a817cadf8bc4f29fb811c8e3e5a2184.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8a817cadf8bc4f29fb811c8e3e5a2184.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/92a37e8519ea115c1777d031d9963583.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/91e1e4115d78e625e9e0f47cdade3286.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c8a4b91763add3ee3a9f0dc1937398d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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2 . 在菱形
中,
,点
分别在边
上,将
沿着
对折,使点
恰好落在对角线
上的点
,若
,则
的面积等于__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/43a6f36741b86f464be362b12bac13d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cea77ba313fcc751481ac1ca214df3fc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5623355e6ec26ddfe095a7361a8f7aa4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c105d6ba18fbb0581fb982175e2eac9.png)
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3 . 对于任意不为0的实数
定义一种新运算“#”:①
;②
,则关于
的方程
的根为__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76f0649064a085fb74c997fb507a9b6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ccc9b449710062494286a01537ecdc00.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f3d785aaa5c1be4b5728cf56b4727d7f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/820023f3de39dffe868be95757ce76d2.png)
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4 . 把两个半径为8和一个半径为9的圆形纸片放在桌面上,使它们两两相外切,若要用一个圆形纸片把这三个圆形纸片完全盖住,则这个大圆形纸片的最小半径等于__________ .
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5 . 在实数范围内因式分解:![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a363f19d6cedc70f4fe0d27103eeadb.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4a363f19d6cedc70f4fe0d27103eeadb.png)
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6 . 已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd027d85010d4685407f9b59d7a788c0.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fea872802fde0e7e0a0ee257be9f45a0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd027d85010d4685407f9b59d7a788c0.png)
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7 . 已知19个连续整数的和为380,则紧接在这19个数后面的21个连续偶数的和是__________ .
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8 . 如图,矩形
中,
是
上的一点,且
边上有一点
,将矩形沿着
翻折,使
落在
上的
处,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e5a339c7647f0e6883b05534a80208b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/884c8782441f3c50a3422c236f868e37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
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9 . 观察下面“品”字形中各数之间的规律,根据观察到的规律得出
的值为___________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20d6fc9b90f370fbb27552876b650f8f.png)
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10 . 设函数
,
,若函数
有三个不同的零点,则实数
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ae8107e42b774d5a5bb5ce24b802691.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d70cfdbb4dc9030f17a750863feb7bc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/df49341b57eb107f416a014903ce25a8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
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