1 . 在
的展开式中,
的系数是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5d90c38838b37ad3e62018b23e023c07.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ae666ea089aeed6e8df798c81dd2f187.png)
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2 . 某中学元旦晚会共由7个节目组成,演出顺序有如下要求:节目甲必须排在乙的前面,丙不能排在最后一位,该晚会节目演出顺序的编排方案共有__________ 种.(用数字作答)
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3 . 已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bed56b9bfc5efe2eeae4ac5764c5befc.png)
___________ .(用数字作答)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0034cff22d30532185197fcd8b923c96.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bed56b9bfc5efe2eeae4ac5764c5befc.png)
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4 . 已知函数
在区间
有且仅有2个零点,则
的取值范围是_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f1c108e4b023b60bd98445e97e17921.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/230b59c53740bcdd3ceca2cd9f860a7b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/074c228ffc7b1e306f8410afe7bc4b5c.png)
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5 . 已知向量
,若
,则实数
的取值范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cc2145bfc9ae2e53323a1c21c5dff68.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d18099c20bd2ce19950f37538f2c56a9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
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6 . 已知函数
,
,
,
.对
,都
,使得
成立,则
的范围是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f92ca3ac04a2bdc12bceee4dfc986054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/790daaa89fc9d093f45023becf765697.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51b7ef89b540c6a358bec1237df699c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0eac2b31a19918895e5af2d316490e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3010c07acbe166b98fc886cc846de51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ba7409b8e4b38636929d90f0ac54b2ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec6154e00013d9dee84c0e941f676ea9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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7 . 费马点是指位于三角形内且到三角形三个顶点距离之和最小的点.当三角形三个内角都小于
时,费马点与三角形三个顶点的连线构成的三个角都为
.已知点
为
的费马点,角
所对的边分别为
,若
,
,
边上的中线长为
,则
的值为_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0211da37e92f915e781691296578ba0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0211da37e92f915e781691296578ba0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4ec3f79448524d6848be51fdd5c7a150.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bb1b5305cb9b5a90c4f13bceaaee4fc0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4734e4bdd3d2a5d489dd863b17687e61.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcdb7a488910743dc5c63afb394b87e2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ec85f29c0860b57a8f0cf8098c13a97e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f352a59a635e3f6570e350ca08de6af5.png)
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8 . 已知正三角形
与正方形
的中心为同一点
,
的边长为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9201e9afbe1a98373191ec7266047b5e.png)
______________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7bef5239ddbb0972700ce01daf9ee7cf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/611f100dcfa7803db6eb233e2e7f2dab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f8c4c029e552954bd493b49aeab82d5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9201e9afbe1a98373191ec7266047b5e.png)
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9 . 已知函数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a5bc738415f0fd10f03838a65d2cae6.png)
,函数
的图象关于点
对称,且函数
图象上相邻最高点和最低点的距离为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46626b75bd7bc420bf32b66e3253b40b.png)
_____________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a5bc738415f0fd10f03838a65d2cae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3731e4fe7dbd8899acb023f8647b71af.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a48c759683208fa7b46e31f8bf0beede.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8860d9787671b53b1ab68b3d526f5ca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46626b75bd7bc420bf32b66e3253b40b.png)
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10 . 如下图,在
中,点
是
的中点,过点
的直线分别交直线
于不同的两点M,N.设
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/934d37c81b2266c7b86bcc11afaf5f91.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7dec2ca6438c82b43f746057d8129885.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78b2321b007f81c61c1283a1cf90aa1b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/934d37c81b2266c7b86bcc11afaf5f91.png)
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