如图,抛物线
的对称轴为直线
,与x轴的一个交点坐标为
,其部分图象如图所示,下列结论:①
;②
;③当
时,x的取值范围是
;④当
时,y随x增大而增大;⑤若t为任意实数,则有
,其中结论正确的个数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/25/17740c6f-f159-4c4e-9a7d-3793a7c3da23.png?resizew=139)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4fe6337d68cd5653767e3a1889b8b2e3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bc6554ac3dff4a59833e407db887f6e6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/aa285de4d015f208441ffe9a84bbd780.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9deb79d044a379f31a8fc57736d7ead.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/061813f1ec633c5c4c393c4de7938322.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/24b843858ba23012c724dea0c51d54a3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/08115d6d9f876dea921a4d32260ff1fb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/20f0c1fa5eb244899337f0f1e447611c.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/7/25/17740c6f-f159-4c4e-9a7d-3793a7c3da23.png?resizew=139)
A.4个 | B.3个 | C.2个 | D.1个 |
更新时间:2022-07-20 08:37:10
|
相似题推荐
单选题
|
适中
(0.65)
名校
【推荐1】如图,抛物线y=ax2+bx+c(a≠0)的抛物线的对称轴为直线x=1,与x轴的一个交点坐标为(﹣1,0),其部分图象如图所示,以下结论:①abc<b2;②方程ax2+bx+c=0的两根是x1=﹣1,x2=3;③3a+c>0;④当y>0时,x的取值范围是﹣1≤x≤3;⑤当x<0时,y随x的增大而增大.其中正确个数是( )
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/20/3df90d70-1e9b-4b36-992a-11200cac5bec.png?resizew=182)
A.4 | B.3 | C.2 | D.1 |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】如图,二次函数
图象的一部分与
轴的一个交点坐标为
,对称轴为直线
,结合图象有下列结论:①
且
;②
;③关于
的一元二次方程
的两根分别为
和1;④若点
,
,
均在二次函数图象上,则
,其中正确的结论有( )
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/5/d11fa644-c290-48f0-bf11-da4c6020ed98.png?resizew=121)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fcc90b02a4cd1425aabfc192b1cdee17.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff32d26c8d44f5fb4813a19c1030a9f5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e1c84057882768f20a01365c81b6760.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39d5f0d374837655cc286d326305da36.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8cec12441802f71e803efaf2c62ee588.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e56f4504e0f80fd031c8b5f41832e03.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4c3f3db6b7c682450309a6ccba5ac5a2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81fb134b2b48acc99213fff6ccfee65f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/932182d5f35b5d81cbad2c52ab2270b9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2b1a1b9baa3f275d0418419a1c39f2ae.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f44cead90ae337fb61c932d93223481e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b8b44c63a912c9f07b80fb8f5bdde7a8.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2024/4/5/d11fa644-c290-48f0-bf11-da4c6020ed98.png?resizew=121)
A.1个 | B.2个 | C.3个 | D.4个 |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐1】如图,抛物线
与
轴交于
、
两点,与
轴交于点
,
,点
的坐标为
,顶点为
,对称轴与
轴交于点
,则下列结论:①
,②
,③
,④当
时,在线段
上一定存在点
,使得
为等腰直角三角形,其中正确的结论的有( )
![](https://img.xkw.com/dksih/QBM/2023/4/28/3226085220614144/3227833592774656/STEM/045d50dda7ef457f8dcec5f2a3b146cf.png?resizew=137)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8352b2e643a7ce605334f1b0e572bfb0.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/d053b14c8588eee2acbbe44fc37a6886.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/497e34cb645ed931bea31c5d4c558c94.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a2a5e336b6bcba6354fd366c892dd06.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8455657dde27aabe6adb7b188e031c11.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a30f3a8b673cc28bd90c50cf1a35281.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/73c21bd0bd90a89b7ff5ac0eacf612a5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/bccb0ba99f869615f32e4320ee7810d2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/200f24e682c93e02a87f3f9d57dc5d40.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b430f2e2ea83e1b33452274cef65d261.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e6e490f703eb6c9bb1278c78ebc2d661.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7a855335176fc36a15017f50a8561348.png)
![](https://img.xkw.com/dksih/QBM/2023/4/28/3226085220614144/3227833592774656/STEM/045d50dda7ef457f8dcec5f2a3b146cf.png?resizew=137)
A.1个 | B.2个 | C.3个 | D.4个 |
您最近一年使用:0次
单选题
|
适中
(0.65)
【推荐2】抛物线
(
,
,
为常数,
)对称轴是直线
,抛物线与x轴相交于
,
两点,
,下列结论正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.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/071a7e733d466949ac935b4b8ee8d183.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/94440d3e4c073f94f2b266ff99d50e74.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e1c84057882768f20a01365c81b6760.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c9df2062940530232ab124a571e951ed.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2fb652143b43cc9439a347b2b1dc5cf6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b96e97805f0853d6f994f0fad3b5aa05.png)
A.![]() |
B.若![]() ![]() ![]() |
C.![]() |
D.方程![]() ![]() ![]() ![]() |
您最近一年使用:0次