1 . 若方程
仅有一个实根,则满足条件的k的最大值等于___________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7d2f4782619ae9824b5af276ba0ff9db.png)
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名校
2 . 已知
,则在下图的四个选项中,表示
的图像只可能是.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/16de2d7f06346a0fc6b5d6822e746237.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a90385c676848de67293e3ed6bc000fe.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
2018-12-23更新
|
192次组卷
|
4卷引用:2008年北京市中学生数学竞赛初赛_高一试题
3 . 已知实数
满足
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/928421d6f09bb837afb46caa3b14d312.png)
________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/6d10449bc77d692a7270e0f20a68cdf2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/914cdbb7d4e8b63adf3d62afff1e0eef.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/928421d6f09bb837afb46caa3b14d312.png)
您最近一年使用:0次
4 . 如图,矩形
的对角线
经过坐标原点
,矩形的边分别平行于坐标轴,点
在反比例函数
的图像上若
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/463fcede-e64c-4f57-bb00-a1f2a51ec341.png?resizew=192)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d40b319212a7e7528b053e1c7097e966.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1dde8112e8eb968fd042418dd632759e.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f10481ffb8f12a659baf9db0e401d997.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1cea6f63894aba70f5c4cfa7740eca6f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dd707b69a11f8de5566f23c1a2a9ff5a.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2022/12/30/463fcede-e64c-4f57-bb00-a1f2a51ec341.png?resizew=192)
A.2 | B.1 | C.0 | D.-1 |
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5 . 已知
、
分别满足
,
,则
等于( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e170f206fdbbd834aad7580c727e2cc6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5b5858ee1ce52b251816757257a11c29.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8c48a09f46667307253e7ddae2c892c6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/88d279d9d0264a163322e4ef13783f69.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/cb20586cda25e2255bf1aba5c6cf2c32.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
6 . 若二次函数
的对称轴为
,且其图像过点
,则
的值是( ).
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/331d5e308cd5469e0f28a8d75f79903f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9b384412acba251d87902ab928902f16.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fab8a0cc6504aa4c3a38006f5394b4c2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/18f579a9ecca45497430dea90ccb2ca1.png)
A.![]() | B.![]() | C.2 | D.3 |
您最近一年使用:0次
7 . 若二次函数
满足
,则实数
的取值范围为______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ff46da4626e4cdf950050aafd67f7955.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0d5f8db4021cd2417066a20dc6da4097.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0a6936d370d6a238a608ca56f87198de.png)
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8 . 求
的值
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9e7a3fce122b837052b03ed55e4994ea.png)
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9 . 函数
的图像与平行于
轴的直线
恰有一个交点.则
能取到的所有值的乘积等于______ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/85dffefcf252179aa20bdb46cd3c73ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/008e80e33ba7b182a6d82862fadc8009.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/071a7e733d466949ac935b4b8ee8d183.png)
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10 . 已知
、
、
是实数,二次函数
满足
.求证:
与1中至少有一个是
的根.
![](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/331d5e308cd5469e0f28a8d75f79903f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac350f5ee9fdd2a73ff4c67807bd4e42.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acbc6a613224461ade69362d46550474.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/86b92b70365c63607daecdc8deb73ecf.png)
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