名校
解题方法
1 . 已知函数
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5a42d73ab2bceb7cca95669e39dcbf7a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94475b3d8a67ebfffc45210d7d1ee4c8.png)
A.1 | B.![]() | C.2 | D.4 |
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2 . 已知函数
,
.
(1)若直线
是曲线
在
处的切线,求
的表达式;
(2)若任意
且
,有
恒成立,求符合要求的数对
组成的集合;
(3)当
时,方程
在区间
上恰有1个解,求k的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b923078510697d5f7f9ea392eb76dd9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/eb4935611969e644511329f6b0dbbf3b.png)
(1)若直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a1cfb60420ff7e72c1b9d64f69ae063.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/51c530f4b7491b95acb8ce3eef9aa09d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/779857e2a9f13158fb4cf5988debceca.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/be1ce3f01e2b6364f9a9fdaf197d5e29.png)
(2)若任意
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8e5223ece2f8f76850c49e2505304532.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/33bd24e647a626899a243a3f3984f90a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7eaa16e4de765a7127b2a4aa8302cef9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a5a5286cdf08218995b1514c195494e3.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/143b917df0520097be222accbddf9394.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/298b861acdad2f218a882319c1a3280a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a531b9769bfba66a10139b153f09307c.png)
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3 . 已知
,那么
的近似值为______ .(保留小数点后一位数字)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2493a9847bdf4e7e0cb5da764d62a4e4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cf6d10885fb83ded00d4e39532fcd10.png)
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解题方法
4 . 已知函数
及其导函数
的定义域均为R,若
是奇函数,
,且对任意
,
,则( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a4b04824a308519a61318a82aa97a05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0aab45a72f14c60ed311f050a11dd361.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e64541d7f445079207b6f671adc7d662.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1c02b0800a67b502e2560459c326a07b.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
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5 . 一木块沿某一斜面自由下滑,测得下滑的水平距离
(m)与时间
(s)之间的函数关系式为
,则
时,此木块在水平方向的瞬时速度为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5873c01192b7d33b7483f444f90b5b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/36a1b09c653185842513e24ebba60bb3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/333cdd36dc127eab88adff0aaaf63117.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f66884efff7400f92b530d69d029778d.png)
A.![]() | B.![]() | C.![]() | D.![]() |
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6 . 已知函数
,则
( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/27b1d897bf1170f96cac0c36823a512a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61b2d9f096d36bdf71e6f64eea70f0d3.png)
A.![]() | B.![]() | C.2 | D.![]() |
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7 . 已知
是定义在
上的可导函数,若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c519456f652f00e8ed4bacabc7d57893.png)
______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe7d5809da02c15a43a0e9a898b9086.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7da3a6d011679952771607b3a166676b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/137ad18330b4907ba189474a28e2d5e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c519456f652f00e8ed4bacabc7d57893.png)
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8 . 某酒杯上半部分的形状为倒立的圆锥,杯深
,上口宽
,若以
的匀速往杯中注水,当时间为
时,酒杯中水升高的瞬时变化率是______
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80b1fe1b971b780e443a9b13621611c5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4dd6f4250ca6b1b9bce234a01f00d44d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0b5b538e847547bbb9e29ecc89800193.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/15b7a662db44251ff09d2bc4cd5574bc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/67d1461f3b7f2a8a65097c8de1dcbfc7.png)
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解题方法
9 . 已知抛物线
,点
在抛物线
上.
的切线的斜率为
;
(2)过
外一点A(不在x轴上)作
的切线AB、AC,点B、C为切点,作平行于BC的切线
(切点为D),点
、
分别是与AB、AC的交点(如图).
(i)若直线AD与BC的交点为E,证明:D是AE的中点;
(ii)设三角形△ABC面积为S,若将由过
外一点的两条切线及第三条切线(平行于两切线切点的连线)围成的三角形叫做“切线三角形”,如
.再由点
、
确定的切线三角形
,
,并依这样的方法不断作1,2,4,…,
个切线三角形,证明:这些“切线三角形”的面积之和小于
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/393dfed4141a606a8aba9b4db21c1c37.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a12637403dddfe351b9e3eacbd6ac2a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bfa4e9d7d044658001c41e2ca2dfb82b.png)
(2)过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/56f7ba05c54b3de1f4378f7c8eb58328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
(i)若直线AD与BC的交点为E,证明:D是AE的中点;
(ii)设三角形△ABC面积为S,若将由过
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4bcd8ee2d8367c167d6ae0abc741b6b8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d1dc5667bbf205d6c6c6d189ebda123e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97c01fdc7bc471af0b264a04aef0823e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b1241216f3c1cb5e73043dd1037f556d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dfaa7a1d2e3b0555ce86e3db435c19e8.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f00117e8ba0b2e730872d7ab6f26666b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9f1ad18371ec533aeac27cf1fad95c1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d903ee24de929de0fc7bc8e45f6c6686.png)
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10 . 已知函数
的图象如图所示,下列说法正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2264e38913d2452521c579e6a110965d.png)
A.函数![]() ![]() |
B.![]() |
C.将函数![]() ![]() ![]() ![]() |
D.函数![]() ![]() ![]() ![]() |
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