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1 . “以直代曲”是微积分中最基本、最朴素的数学思想方法.在切点附近,用曲线在该点处的切线近似代替曲线就是这一思想的典型应用.曲线
在
处的切线方程为_____ ,已知
,利用上述“切线近似代替曲线”的思想计算
所得的结果为________ .(结果用分数表示)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12be206d66e65eb92ef08bad8cd8f71d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1d7a999c36de5c9a9ce876a4a56fa34c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/db98dea418873addedfa1c94404296e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/75403bea41c513a99121ea8089f1e40f.png)
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2023-09-28更新
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237次组卷
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6卷引用:河南省商丘市部分学校2024届高三上学期9月质量检测数学试题
解题方法
2 . 一个装有水的圆柱形水杯水平放在桌面上,在杯内放入一个圆柱形铁块后,水面刚好和铁块的上底面齐平,如图所示.已知该水杯的底面圆半径为6 cm,铁块底面圆半径为3 cm,放入铁块后的水面高度为6 cm,若从
时刻开始,将铁块以1 cm/s的速度竖直向上匀速提起,在铁块没有完全离开水面的过程中,水面将______ (填“匀速”或“非匀速”)下降;在
时刻,水面下降的速度为______ cm/s.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cfa69228941dbf862c4a675a91413eb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c1fd476a0837292db7038d10548e5955.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/17/7b422f9c-e72d-4921-8875-1d80e01e72e2.png?resizew=101)
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2023-04-16更新
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376次组卷
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6卷引用:河南省南阳地区2022-2023学年高二下学期期中热身摸底检测数学试题
3 . 已知函数
在
处的切线方程为
则实数![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
______ ,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
________
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3e1356462e90c58a8ce10d30ee237218.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b7f604ded7a257ccb5b075fd52caa85.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/380bbacf854e30e2e747fc286d2b9997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5ccd4162c7d09f970cb77cadacdbe521.png)
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4 . 已知直线
恒过定点A,则该定点A的坐标为________ ,若直线l与曲线
和
都相切,则a=________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb0d6d0cfe389abca252332223b5da17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/19235af93513ae52117810409db6b8d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2e9f049a5f960728c60a909821b2404b.png)
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5 . 过曲线
上一点
作该曲线的切线
,
分别与直线
,
,
轴相交于点
,
,
.设
,
的面积分别为
,
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3dabace330ccdd9755fbcf32d5d6343.png)
________ ,
的取值范围是________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f05616bd6fa88a792267570ac3e7e212.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f85fca60a11e1af2bf50138d0e3fe62.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d77f5191798242b7b9b88a75e17e4425.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08b9f0b9e53a83e68f5fec944f343119.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.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/173bc7a36757d77f01213411edd25241.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3fe95f656b98b53f71a9d72bf0c9a4b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3dabace330ccdd9755fbcf32d5d6343.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
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2020-07-24更新
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514次组卷
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4卷引用:河南省安阳市第一中学2023届高三第四次全真模拟数学试题