已知函数
与
.
(1)求证:
与
的函数图象总有两个公共点;
(2)当
时,
,求
的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9a0a353517e3c1c841514b546358f52b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5257a401bcc668e5117aa45a16b86868.png)
(1)求证:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54015ff5b49e3283901da1291b6b921d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/46f6872ffb1934339c53c2c2282d5889.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16688590aa75a979cc269d934f1bf899.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/25f99df1a7b58018125b99578b779342.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
更新时间:2024-03-22 18:46:34
|
相似题推荐
解答题-证明题
|
适中
(0.65)
【推荐1】已知关于
的一元二次方程
.
(1)求证:此方程总有两个不相等的实数根;
(2)设方程的两个实数根为
,
请解答下列问题:
①若
,
,求
的取值范围;
②请判断
的值能否等于
,若能,请求出此时
的值;若不能说明理由.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a7c3b5ef97020553501a1ba32591f305.png)
(1)求证:此方程总有两个不相等的实数根;
(2)设方程的两个实数根为
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/23c2c148a06d89ce71410281d90cee85.png)
①若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6270bb08b90f72d5671ab8225f356c43.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a6e8b230513c1934f2c29bb19b54d4c3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
②请判断
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c847f857b8d1788d4ba414b82840ef5e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d91e07104b699c4012be2d26160976a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
名校
【推荐2】已知
、
是关于
的方程
的两个不相等实数根,且满足
,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c814128ea2139e33db94ea590e7c2223.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aec19b68e3add9d5bfcc6269a1855b87.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/53e380fed282deaec5e9ed213284bf1a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/3cd1adb0855e7c2d014b2f8277d577a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f0a532e15e232cb4b99a8d4d07c89575.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐1】如图.在平面直角坐标系中,O为坐标原点,抛物线
与x轴交于A,B两点,它的对称轴交抛物线于点M,交x轴于点N,过点M作
轴于点D,连接
交对称轴于点E.已知点A的坐标为
.
(2)求
与
的面积之比;
(3)动点P,Q在此抛物线上,其横坐标分别为m,
.其中
.设此抛物线在点A和点P之间的部分(包含点A和点P)的最高点与最低点的纵坐标之差为
﹐在点A和点Q之间的部分(包含点A和点Q)的最高点与最低点的纵坐标之差为
,当
时,请求出m的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f0a689a0bea86ac5512d89d2fb8f73d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1926f34fd0accc5678a6f1f232dc0a42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b3182db896bc2462331796e2a6108363.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/97b3c94d505e7c5bcce94afec4af3d92.png)
(2)求
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9825e881728e22d0b8d4dab50854c433.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1119c729df3b5285dddca42def31bc9e.png)
(3)动点P,Q在此抛物线上,其横坐标分别为m,
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0623207595425920f16e76a7f8f268b6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/68d9d76b59ec1414a1cdf7f49127610c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/80b53eab97158937f92039c1e133b0f1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f285174fbf90a9742de57c1e53224cff.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f93e8fa5debb324ff0c55d57738305e.png)
您最近一年使用:0次
解答题-问答题
|
适中
(0.65)
【推荐2】如图,二次函数
(m是常数,且
)的图象与
轴相交于点
、
(点
在点
的左侧),与
轴相交于点
,动点
在对称轴
上,连接
、
、
、
.
(2)当
的最小值等于
时,求
的值及此时点
的坐标;
(3)当
取(2)中的值时,若
,请直接写出点
的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b9cd2cc53c4873806326fe52b3848c02.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/58b140e221ddf537b8964fff8557cca0.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/7f9e8449aad35c5d840a3395ea86df6d.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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.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/60ef95894ceebaf236170e8832dcf7e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bd33764ff4efddfe11a98a609753715c.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/48f3c9abbd78e9a6840ee5f30381daac.png)
(2)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a51a8d10345f567e0f2daf18529d42f0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/588c3822b7812e711b4ad86647b15dc1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
(3)当
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/294f5ba74cdf695fc9a8a8e52f421328.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b7021cf14b4f0c181a90fec967be7244.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
您最近一年使用:0次