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解题方法
1 . 若
,且对任意![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52ee3959c3d5a852dc1caa443e37495b.png)
的恒成立,则实数
的取值范围为_______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4cf176e43719945f8c3ba79813787ad9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/52ee3959c3d5a852dc1caa443e37495b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/189f9b59162292ee6d1d30275ad08bfb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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2016-12-13更新
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1230次组卷
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4卷引用:2017届江苏扬州中学等七校高三上期中联考数学试卷
2017届江苏扬州中学等七校高三上期中联考数学试卷江苏省苏州市苏苑高级中学2019-2020学年高三上学期10月月考数学试题江苏省南通市如皋中学2019-2020学年高三下学期5月检测数学试题(已下线)“8+4+4”小题强化训练(12)含有ex、sinx与lnx的组合函数或不等式问题-2022届高考数学一轮复习(江苏等新高考地区专用)
2 . 已知曲线C:y2=2x-4.
(1) 求曲线C在点A(3,
)处的切线方程;
(2) 过原点O作直线l与曲线C交于A、B两不同点,求线段AB的中点M的轨迹方程.
(1) 求曲线C在点A(3,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cf298f00799cbf34b4db26f5f63af92f.png)
(2) 过原点O作直线l与曲线C交于A、B两不同点,求线段AB的中点M的轨迹方程.
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3 . 如图,某广场中间有一块边长为2百米的菱形状绿化区ABCD,其中BMN是半径为1百米的扇形,
.管理部门欲在该地从M到D修建小路:在
上选一点P(异于M、N两点),过点P修建与BC平行的小路PQ.
![](https://img.xkw.com/dksih/QBM/2016/12/12/1579120042860544/1579120043376640/STEM/15d3eafefd9d44aca5d9ff93bd99a0dd.png)
(1)若
,求
的长度;
(2)当点P选择在何处时,才能使得修建的小路
与PQ及QD的总长最小?并说明理由.
![](https://img.xkw.com/dksih/QBM/2016/12/12/1579120042860544/1579120043376640/STEM/681036ea21344ae0929132622fc81df2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9d56f283179b181734b6fe7e5cafad91.png)
![](https://img.xkw.com/dksih/QBM/2016/12/12/1579120042860544/1579120043376640/STEM/15d3eafefd9d44aca5d9ff93bd99a0dd.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e96bf16ffb5d7387315f63b349bcf11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
(2)当点P选择在何处时,才能使得修建的小路
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8bc773096dba7c678e46dc904058bce8.png)
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4 . 如图,半径为1,圆心角为的圆弧AB上有一点C.
(1)若C为圆弧AB的中点,点D在线段OA上运动,求|→OC+→OD|的最小值;
(2)若D,E分别为线段OA,OB的中点,当C在圆弧AB上运动时,求→CE•→CD的取值范围.
(1)若C为圆弧AB的中点,点D在线段OA上运动,求|→OC+→OD|的最小值;
(2)若D,E分别为线段OA,OB的中点,当C在圆弧AB上运动时,求→CE•→CD的取值范围.
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766129152/STEM/4b642228dfcc40d6855933fea8b655e8.png)
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5 . 已知
,则函数
的最小值为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12990c8fb311e13845e5b433dcbcd417.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/14b0d5d5d56277d3f4b1e741f9096499.png)
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6 . 已知
为直线,
为空间的两个平面,给出下列命题:①
;②
;③
;④
.其中的正确命题为________________ .
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182765727744/STEM/12e2c5a9712c4581ad2b2db69167272b.png?resizew=31)
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182765727744/STEM/2869bc083f994310b35bf65dc6a37264.png?resizew=33)
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182765727744/STEM/53ee8093d66448359a3673a2f2cdb97d.png?resizew=112)
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182765727744/STEM/e39a2605d300497092544e28c25c996f.png?resizew=114)
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182765727744/STEM/443c0baede294b1395be553e50e8a4ee.png?resizew=116)
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182765727744/STEM/14601e9d9e7a459a836357d7d2553f1f.png?resizew=113)
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7 . 对于定义域为D的函数
,如果存在区间
,同时满足:①
在
内是单调函数;②当定义域是
时,
的值域也是
.则称
是该函数的“和谐区间”.
(1)证明:
是函数
=
的一个“和谐区间”.
(2)求证:函数
不存在“和谐区间”.
(3)已知:函数
(
R,
)有“和谐区间”
,当
变化时,求出
的最大值.
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766161920/STEM/85788af6b4a64af49a2488b14790cbc4.png)
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766161920/STEM/0c9cc65ece4c41f7932a390bb4a491c1.png)
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766161920/STEM/86162c78c4b144bc89a2c748a040b308.png)
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766161920/STEM/5bfa40ca62b848a4b0515b76807276ec.png)
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766161920/STEM/5bfa40ca62b848a4b0515b76807276ec.png)
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766161920/STEM/86162c78c4b144bc89a2c748a040b308.png)
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766161920/STEM/5bfa40ca62b848a4b0515b76807276ec.png)
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766161920/STEM/5bfa40ca62b848a4b0515b76807276ec.png)
(1)证明:
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766161920/STEM/f237254e258b4ec281e12610b5d7e5ab.png)
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766161920/STEM/85788af6b4a64af49a2488b14790cbc4.png)
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766161920/STEM/63c0d3e3823644e5bbe2efe41ffe1590.png)
(2)求证:函数
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766161920/STEM/860a31536a6b4cbba385cb94a18d53cf.png)
(3)已知:函数
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766161920/STEM/903023ddba954478acf160b661848db1.png)
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766161920/STEM/80ca0bb0234f4b819f857dd8814e6fa2.png)
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766161920/STEM/5b6cb3b1916a44acbeee023fcd25fee7.png)
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766161920/STEM/5bfa40ca62b848a4b0515b76807276ec.png)
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766161920/STEM/931f1a47f3fd41e6bd63d40181e59177.png)
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766161920/STEM/036270e93bff4c29880b98c7701723d3.png)
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8 . 在
中,a、b、c分别是角A、B、C的对边,且=-.
(1)求角B的大小;
(2)若b=,a+c=4,求
的面积.
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766047232/STEM/c4cd265fe19f4f8b82f1a071be78e4f3.png)
(1)求角B的大小;
(2)若b=,a+c=4,求
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182766047232/STEM/c4cd265fe19f4f8b82f1a071be78e4f3.png)
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9 . 已知
中,
边上的高与
边的长相等,则
的最大值为__________ .
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182765932544/STEM/8d63f085146249dc841c52f3aa84cd7c.png?resizew=45)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f52a58fbaf4fea03567e88a9f0f6e37e.png)
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182765932544/STEM/b464ba955c044b338d45bead2cc4a0e8.png?resizew=143)
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10 . 设函数
在区间
上是增函数,则
的取值范围为____ .
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182765858816/STEM/66c470550f0e4d34ba494b2c809ebac7.png?resizew=117)
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182765858816/STEM/ccbf49626bf34d4f82faa0472c17d663.png?resizew=64)
![](https://img.xkw.com/dksih/QBM/2016/11/25/1573182759813120/1573182765858816/STEM/b15de9f1fe634930aa160073c0da7660.png?resizew=16)
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