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解题方法
1 . 已知某新型水稻产量的年增长率为
.某粮食种植基地计划种植该品种水稻.已知该基地2020年储有该品种水稻的产量为15万吨.现计划从下一年(2021年)起,每年年初种植,年底从中分出固定的产量用于销售,15年后清空种植并更换种植品种.设
年后该品种水稻的剩余产量为
万吨.
(1)设每年用于销售的产量为
万吨,请用
和
表示
;
(2)求
(用
表示).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2379be9b10a7b4a90c8de00df4b5ce9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b6a24198bd04c29321ae5dc5a28fe421.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(1)设每年用于销售的产量为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96abfe2da27a63e6affb19a0c80236d9.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/11bc05f41215f9894e11d1df0465751a.png)
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3卷引用:浙江省宁波市镇海中学2021-2022学年高二上学期期中数学试题
浙江省宁波市镇海中学2021-2022学年高二上学期期中数学试题1.4数列在日常经济生活中的应用检测B卷(综合提升)(已下线)专题08 数列的通项、求和及综合应用(讲)--第一篇 热点、难点突破篇-《2022年高考数学二轮复习讲练测(浙江专用)》
解题方法
2 . 已知圆
过点
,
且圆心
在
轴.
(1)求圆
的标准方程;
(2)圆
与
轴的负半轴的交点为
,过点
作两条直线分别交圆于
,
两点,且
,求证:直线
恒过定点.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d4b89b590fb9a9bb70067026fc57816.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/625ca4aa60747efdd8e9aa922288f39c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
(1)求圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
(2)圆
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/895dc3dc3a6606ff487a4c4863e18509.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66db3fe1140cb8316b19b3e9868eeb6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
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解题方法
3 . 已知函数
在
单调递增,且
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/09f86f37ec8e15846bd731ab4fcdbacd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d7dcdd87d593df4a5c5e98d47fe1cfa6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/34ea832b11f5a84b9bf3020271480631.png)
A.![]() |
B.对![]() ![]() ![]() |
C.若![]() ![]() ![]() |
D.对![]() ![]() |
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2卷引用:浙江省宁波市效实中学2021-2022学年高一上学期期中数学试题
名校
4 . 方程
的实根个数为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d05b06c90f52c722755999dac77502e.png)
A.1 | B.2 | C.3 | D.前三个答案都不对 |
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2卷引用:浙江省宁波市效实中学2021-2022学年高一上学期期中数学试题
名校
5 . 已知正整数集合
,记
表示集合A中所有元素的和,
表示集合A中偶数的个数.若
,则
的可能值( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/98adac1080046b3c634b0878a6d3b744.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0928441297e887330350a46dd2b40841.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3181c4dddac52d816380cea204637e7.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e736d2731446990e8fac4c19be09a175.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a3181c4dddac52d816380cea204637e7.png)
A.43 | B.42 | C.7 | D.6 |
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6 . 根据宁波市物价局、宁波市交通委的相关规定,出租汽车起步价由现行3.5公里(千米,以下同)10元调整为3公里11元,超过起步里程后,由现行每公里2元调整为2.4元,跨区行程空驶费规定为,单程载客10公里内不收取空驶费,单程载客10~20公里部分,空驶费标准为车公里价格40%(每公里0.96元);20公里以上部分,为车公里价格60%(每公里1.44元).学生李某乘坐出租车由镇海中学出发,跨区参加科学中学的活动,此次行程票据显示李某共需支付出租车费268.76元(没有高速、停车等其他费用),据此推算两校区之间的距离为( )公里.
A.110.4 | B.117.4 | C.79.4 | D.74 |
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7 . 在数学中有这样形状的曲线
:
,以下说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e04720ecc25ad8e71f2628c2ee0c674.png)
A.曲线![]() ![]() ![]() |
B.![]() ![]() |
C.曲线![]() |
D.![]() ![]() ![]() ![]() ![]() |
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8 . 计算求值
(1)
;
(2)
(e为自然对数的底数,
).
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f24d691454a0b069944eb8d1cfc5599d.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aebd6517da8d5b22675bad51669b4dff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/594663e98b797cdc4efbd098cc15854f.png)
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9 . (1)设
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d041ee59673c0108d9504e38fbe9afa0.png)
______ ;
(2)若
与
,
,
(
,
,
三点不共线)四点共面,且对于空间任一点
,都有
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825116eb345f5505ebc8c1cdb8a1f131.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f424e1f5e16ab17a262f25ebedb8e051.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10e0b6791e6a3249f3427e58da5f699e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d041ee59673c0108d9504e38fbe9afa0.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.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/c5db41a1f31d6baee7c69990811edb9f.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/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68a1ae2d5a9966fbd328f45f94be582d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/825116eb345f5505ebc8c1cdb8a1f131.png)
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10 . 以下说法正确的是( )
A.以![]() ![]() ![]() |
B.已知![]() ![]() ![]() ![]() |
C.抛物线![]() ![]() ![]() |
D.双曲线![]() ![]() ![]() |
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