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1 . 同种规格的产品,甲组生产占40%,优品率为10%;乙组生产占60%,优品率为20%,将两组生产的产品混合,从混合产品中任取1件.则取到这件产品是优品的概率为______ ;若取出一件产品是优品的条件下,是甲组生产的产品的概率为______ .
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7日内更新
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718次组卷
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2卷引用:天津市民族中学2024届高三下学期4月校内模拟检测数学试卷
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解题方法
2 . 已知直线
与圆
交于
,
两点,
为坐标原点,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e3d627f5fbd04271389d503942d233.png)
______ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d8e20f99a4c67a3dd6f0787d64b3ba5.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fceb9eb57ca36db386ffafeda213599c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/545b79010f9992c67601e7655eda416c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e3d627f5fbd04271389d503942d233.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d8e20f99a4c67a3dd6f0787d64b3ba5.png)
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解题方法
3 . 已知函数
,
,若直线
与函数
,
的图象均相切,则
的值为________ ;若总存在直线与函数
,
图象均相切,则a的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a3199e7b4e66aba9f167701839e94e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a2aeb20f9e5c8ab97c0a6543a2cf0f5c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/836b419464e4734e99af06c2fb104716.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18f0281e6bbdbe08beeccb55adf84536.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/942c2141d01bde6b48210c56a17fc75e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1938c093dd2fbcb752d0eb7a18d143b2.png)
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解题方法
4 . 函数
的定义域为
,对任意
,恒有
.若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f71599cd707909eb30d2a54be7f8c966.png)
___________ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e663df07f3e3e4c32c752189dd66940.png)
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf3ed15aa3dcc4211fb520b5b942c989.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e64541d7f445079207b6f671adc7d662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86d41a210e61d9a8a6c8426d12ba55ba.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51e817f37f5a814e856ebc4a16d676ce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f71599cd707909eb30d2a54be7f8c966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6e663df07f3e3e4c32c752189dd66940.png)
您最近一年使用:0次
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解题方法
5 . 随机变量
,
,随机变量
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a410f3a274456b579cc10d8a32ee012c.png)
________ ,
_________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f022950e0faa45b617d497b01b5292b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5561436e6294086d5aaee7bccbf33f3d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39f2df2eeceaff9219ee91f2986bf69c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a410f3a274456b579cc10d8a32ee012c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f412feb8dcad5599ddfe1d1ceb00ac0b.png)
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6 . 如图,边长为2的正方形
中,
分别是
的中点,将
分别沿
折起,使
重合于点
,则三棱锥
的外接球的体积为__________ ;设直线
与平面
所成角分别为
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0890d955d54daafbaf9e9662ea23ecb.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ad056c25c0fdcbcc765eb5cbc6093f2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/374fe9986ebbc986fc422e514ab93a51.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d0a181fb3a5a51245c82f94eebadcab.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0e1b35ce4e9edff774c986d78e4b39f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24e0c10fb103930eabd5fa18e8f9bb06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16fd1bc6147d69777b26a35d48522f7e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0368bbedfea716e7af7919d7d4ca842a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/134ef0b1a2669a09f05bd4dc2496f706.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61ba63ad02b1d5af2982fac3d91eb15c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c0890d955d54daafbaf9e9662ea23ecb.png)
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7 . 市场上某种产品由甲、乙、丙三个厂商供应且甲、乙、丙三家产品市场占比为
由长期的经验可知,三家产品的正品率分别为
,将三家产品按照市场比例混合在一起.从中任取一件,则此产品为正品的概率______ ;若在市场上随机购买两件产品,则这两件产品中恰有一个是正品的概率为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a034c0533f7131a6b2e51369a5d26b63.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f8e2e80ad609ddce185f227fc35f7e36.png)
您最近一年使用:0次
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解题方法
8 . 在
中,
,
,
,
,
,若
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adda1fe4d6ed0bb5f530132dbb56fdce.png)
______ (用
,
表示);若
是
上一动点,过
分别做
交
于
,
交
于
,则
的最小值是______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15c0dbe3c080c4c4636c64803e5c1f76.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcd0ced286a0fbc7e4862f8147264277.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a8a7b5adfcac0f46a4cd19da4ebb4a2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b57fdd2a3642716fcf5100011eb3ec88.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7b9d8a08fc52c31cc1a7f527d18b55c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f386f5b56b07b96f2600da1be15414a1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3667bd68a45c01e7b2167319d1a7bcc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7368be0f2dc9978145431bdd6636ba90.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/adda1fe4d6ed0bb5f530132dbb56fdce.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a2f4b1178f68bd147d1a2a6acd04435.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c94075193c11fe43f2396cff5a485054.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7edadd9995393ece0d7b7bf4801504bd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0ed1ec316bc54c37c4286c208f55667.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/04fb30a9d07e410ac92c34b8ad0133db.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/104dc652d286d2f81b036465a670edb2.png)
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解题方法
9 . 已知实数
满足
,则
的值是__________ ,
的取值集合是_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/632244ea6931507f8656e1cc3437d392.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1845c3646482ae17a78dba94c01352f9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
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10 . 已知成对样本数据
,
,…,
中
,
,…,
不全相等,且所有样本点
都在直线
上,则这组成对样本数据的样本相关系数r=______ ,其决定系数
=______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56720e2f2b0ddd72156da495923698da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2852ae85cfcc804b3192ea8543c88938.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2666f1aa8541683b061e8a596260366.png)
![](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/3282e5fde4ae53fcb1bb072a685304c9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27f1c11bd791dcfbcc90c53c1c125ce0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6599b8f014efb1ac974f1ff915359616.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c85067c53e936ef32da818efe04bdbb.png)
您最近一年使用:0次