函数
的图象上存在两点
,![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8d51640e229ea6f449c40d0aea42bdf.png)
(1)若
,下列说法正确的是:______
①
②
③![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d7e8516cbf220d39a7d5d3a9a54118e.png)
(2)若
,对于所有满足条件的实数
和
,当
时,函数不存在最值,求出
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/333726ed57a25bc084db2b959570d76f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/26820332294b112e27b8d7ffa4ae8631.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8d51640e229ea6f449c40d0aea42bdf.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb7961cbe98aac6a5fdee94582c341b4.png)
①
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e3a915c1a8a9304aeb307d130faaeb15.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd039882414ced3cd59d7a4d5ec76f35.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d7e8516cbf220d39a7d5d3a9a54118e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0bdc69abbcdf98c42b649f8d8d4cd1ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2c94bb12cee76221e13f9ef955b0aab1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d2523d40182577aff085bc247548e02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
更新时间:2022-12-17 12:33:52
|
相似题推荐
解答题-证明题
|
较难
(0.4)
解题方法
【推荐1】如图,
为
的边
上一点,
,
为边
上异于点
的一动点,
是线段
上一点,过点
分别作
交
于点
,
交
于点
.
![](https://img.xkw.com/dksih/QBM/2021/5/11/2718728788877312/2723986109112320/STEM/473b8c42-acd3-4f2b-8262-680aaeb423c1.png)
(1)若
,
,
,求
的长;(提示:过点
作
)
(2)当点
在边
上运动时,四边形
始终保持为菱形,
①证明:
是定值;
②设菱形
的面积为
,
的面积为
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d7b2fe01a33c4825f9974ed9663a99c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63447ea996b9036a7a7ae726cc382cdf.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/152236216f8d1cb39b261108e8fc8b9e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce066003c0a1f0879cbca2f32802e9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/167d31eb8432b5c0364316e5048c23dd.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce066003c0a1f0879cbca2f32802e9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6a9ab90788bfa77a7287d14ce54efb02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/78ca4b3f29af51b52d6c6d6cb9f8682f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://img.xkw.com/dksih/QBM/2021/5/11/2718728788877312/2723986109112320/STEM/473b8c42-acd3-4f2b-8262-680aaeb423c1.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dc1eb76fe74cba30f7cbcde349ba80da.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b5d4dbbc3ddd84bed9272b210b620dbc.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/12ebb7e82916a3266fbcdebff8c4de6a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce066003c0a1f0879cbca2f32802e9b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4b37625595a63cb47e1cdf9c5da40c3e.png)
(2)当点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54a5d7d3b6b63fe5c24c3907b7a8eaa3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7096e74edfb1830dea70feec95859053.png)
①证明:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53f32d5f1942c0a82cca3549f3b5ac89.png)
②设菱形
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7096e74edfb1830dea70feec95859053.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e097c8d4c948de063796bd19f85b3a9a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6f90e3f332b58b4df6cc35a92b611b6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1e0bd63f55069a3bc870915010b39225.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/235f0a6fb218d28383e6f27f2df1f50f.png)
您最近一年使用:0次
解答题-问答题
|
较难
(0.4)
【推荐2】如图,抛物线
过点
,点P在抛物线上,且横坐标为m,抛物线P、Q之间的部分(包括P、Q点)图象记为M.
(2)当
时,求图象M最高点与最低点纵坐标的差.
(3)点B坐标为
,以
为对角线构造平行四边形
,
轴,过C作x轴的垂线l,直线l将平行四边形
的面积分成
的两部分.
①当
时,求平行四边形
的面积.
②当直线l与直线
的交点刚好在抛物线上时,直接写出m的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f0a689a0bea86ac5512d89d2fb8f73d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/673e46bc75396913a8ada8ab74f7f3b9.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fc895959e9bc92294dc9dd2263dbf0c5.png)
(3)点B坐标为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b364be0157a0ebf188627273f02d997a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d2be49c37e30a3ced0364c3e74d8c687.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a351136b18bc7d3bd5122332772ab23b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e66b6663834e5962b27bf7ed5f4ed398.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a351136b18bc7d3bd5122332772ab23b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3ece0891f70a6b4dcea9a7be410cf74a.png)
①当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fd876a2ed79c64bacc3e64b8ee92735e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a351136b18bc7d3bd5122332772ab23b.png)
②当直线l与直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
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解答题-应用题
|
较难
(0.4)
名校
【推荐1】跳台滑雪是冬季奥运会的比赛项目.如图,运动员通过助滑道后在点
处腾空,在空中沿抛物线飞行,直至落在着陆坡
上的点
处.地面
为
,腾空点
到地面
的距离
为
,坡高
为
,以
为原点,
所在直线为
轴,
所在直线为
轴,建立如图所示的平面直角坐标系.已知这段抛物线经过点
,
.
(1)求这段抛物线表示的二次函数表达式;
(2)在空中飞行过程中,直接写出运动员到坡面
竖直方向上的最大距离;
(3)落点
与坡顶
之间的距离为________
.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49ec72d07385ed62ec9540083958be2a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5963abe8f421bd99a2aaa94831a951e9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8d112c9693aa126c92bf1402a1f66bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828628c0876b45381c9a0edeb0fec236.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d8badcdb1e5621f0ac4d9272041185a6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b90e0f35eda1a729fed485f83da5ea9d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef4113c492885ba7c47fe42ac792578f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/709f1daa959641f2e44085f04e9db4f4.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/283b8c7ca54a20995b59f012a689309f.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/9/12/293781ea-6180-41f2-b2bd-0345a04550e6.png?resizew=334)
(1)求这段抛物线表示的二次函数表达式;
(2)在空中飞行过程中,直接写出运动员到坡面
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(3)落点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e15e00f40396e914d1d9955bd7785f1f.png)
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解答题-问答题
|
较难
(0.4)
【推荐2】如图,在平面直角坐标系中,二次函数
的图象经过点
,点
.
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/18/1262513b-b83b-4ad4-ad28-a6fcca0178bb.png?resizew=210)
(1)求此二次函数的解析式;
(2)当
时,求二次函数
的最大值和最小值;
(3)点P为此函数图象上任意一点,其横坐标为m,过点P作
轴,点Q的横坐标为
.已知点P与点Q不重合,且线段
的长度随m的增大而增大.
①求m的取值范围;
②当
时,直接写出线段
与二次函数
的图象交点个数及对应的m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d88bbd34102b55fa928e8ff83f0d52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ee33736169c249a029f478a605dc2c05.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6ab90f08ce38adaa707cc10ee852496d.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/2/18/1262513b-b83b-4ad4-ad28-a6fcca0178bb.png?resizew=210)
(1)求此二次函数的解析式;
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d18aca0e7da68266cda4d4af074a3d02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58d88bbd34102b55fa928e8ff83f0d52.png)
(3)点P为此函数图象上任意一点,其横坐标为m,过点P作
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7316ef3dcf6008a68e0b3a018ee7e52.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/346b39f3d56c769c5bdbd019bda9ca50.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
①求m的取值范围;
②当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/10e47ed54eebf64d940e32416db9c9cb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a5f1641947153c80b987320885a2b57.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8b70780064c42bf2952cdcb91d280994.png)
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