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1 . 已知函数
(
表示不超过
的最大整数),则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45987157289348c4a401551ffd7cb820.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e6b1826b8eadc1e9361d2f989545df0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c4f5908d6a1217e493ed7586b6964dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/45987157289348c4a401551ffd7cb820.png)
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2 . 已知函数
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9821cd4642425ae8d6c92ff9d48123e.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/13f16ecf00e593999e81a50906659f79.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f9821cd4642425ae8d6c92ff9d48123e.png)
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3 . ![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dea292e4b2a6e19533a24385134cd734.png)
___________ (用数字表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dea292e4b2a6e19533a24385134cd734.png)
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4 . 在
中,角A,B,C所对边分别是a,b,c,若
,
,
,则最小角的余弦值=______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa4c355f11471a38f5583a434a1ddeb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23725094c363fd158166a8698971694c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb1ec9c5eaed4c211a040a2a33fb7c91.png)
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5 . 在
中,角A,B,C的对边分别为a,b,c,若
,且
,则c的值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e428e7a09732be85c1224e9c8f6a71c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d6d1171b2c94240b33e6fa2e69d20709.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1b422247921fd2d7daeeac1a52a2a30.png)
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6 . 已知
,
是相互独立事件,
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6ba417c2ae79ca0891af96ec16113dc.png)
_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad3f14d85280adb23fdab2b16efce4f3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cfee67a3a56c9b36178ad7dddb5e8363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c6ba417c2ae79ca0891af96ec16113dc.png)
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解题方法
7 . 在一个如图所示的直角梯形
内挖去一个扇形,
恰好是梯形的下底边的中点,将所得平面图形绕直线
旋转一圈,则所得几何体的体积为_____ .
![](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/e6e490f703eb6c9bb1278c78ebc2d661.png)
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8 . 如图,正八边形
中,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/292029a209c653d03fa8a53daf4f7d89.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d17d4a6cf11cda87b3dfafaecdec683f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/292029a209c653d03fa8a53daf4f7d89.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/6/4/6cdf0d2c-ad28-47af-aaa5-e7d75303a3f2.png?resizew=155)
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9 . 二次函数
的图象如图所示,则不等式
的解集为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2056430efa4210fcd8c3d130af5c978e.png)
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10 . 已知数列
满足
,且
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa37e5661af68b263a3ed9030d4e9003.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/83cf38189d5cbf627d2b82ac0eb76006.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cefeddf71dca8ae824328df3f0e5e1e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79b988f7948e7e7356664ce0fb4ba0d6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa37e5661af68b263a3ed9030d4e9003.png)
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