1 . 若0是关于x的不等式
的解,则实数a的取值范围是__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/05d56804d45a13322dec30ac5da9e35e.png)
您最近一年使用:0次
2 . 在数轴上,已知
,则![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
__________ .
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/54e7b0f32db21554222097c8382b2702.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c26a46e7879436d532af3f4b6e258a81.png)
您最近一年使用:0次
3 . 已知关于x的方程
的三个根可以作为三角形的三边,求实数m的取值范围.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9dca330f38f1907dd80d9573837b1635.png)
您最近一年使用:0次
4 . 设关于x的方程
的两根为
.
(1)若
,求实数m的值;
(2)若
,求实数m的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/06221b507a5592e017eae4d47aa5db2b.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/8ce7ae90d808f05e86ea063238e4b2f9.png)
(1)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c580153688c5deaac590cd4a1eacab6e.png)
(2)若
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/509bfb260ba9abbd1ec54a74f4d850b8.png)
您最近一年使用:0次
5 . 关于x的方程
的解集不可能是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0f56679339760d35303d9ba17750bdca.png)
A.![]() | B.![]() | C.![]() | D.![]() |
您最近一年使用:0次
6 . 下列关于方程
的说法中,正确的是( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/39933885ca8cf5903a071c207116a548.png)
A.两根之和为2 | B.解集为![]() | C.两根之和为1 | D.有两不等实根 |
您最近一年使用:0次
7 . 口袋中装有100个大小相同的红球、白球和黑球,从中任意摸出一个,摸出红球或白球的概率为
,摸出白球或黑球的概率为
,那么口袋中共有白球、红球、黑球各_________ 个.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/d89e3f457544f1a385e4b60885f0b28d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/1a8369759e1b9fb732c3968b20cfae6a.png)
您最近一年使用:0次
2023高一·全国·专题练习
解题方法
8 . 如图,在四棱锥
中,
,且
.点
是线段
上一动点.当
平面
时,求
的值.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0585b6c0f156eecf9662b9846d4eb693.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/006eabc4d46b28bced4011510489261a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/76894e0861c36728a28d273ea6efba47.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ac047e91852b91af639feec23a9598b2.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e0629ce42392a7fe9be21d25c39c3e64.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9aa69a2247ad4d5231aa361349b12f97.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/fb304d905125170bebfada27e7ed8960.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/241a37fb1eff68a7133822b1b52d627e.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/6/9/d94b7ad2-8843-4a22-a256-fdd0337b5244.png?resizew=161)
您最近一年使用:0次
9 . 已知
,则方程
的解集为( )
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f6b54fdc920fd0a627959bbc5bd292d3.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/828765097c682c0b260c81e5bf6229a6.png)
A.![]() | B.![]() |
C.![]() | D.![]() |
您最近一年使用:0次
10 . 如图,在矩形
中,
∥
,
∥
,
,
,现分别沿
,
将矩形折叠使得
与
重合,求折叠后的几何体的外接球的表面积.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/411b38a18046fea8e9fab1f9f9b80a5f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ef0402dd5ae3db10281f9f1e11738bcb.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/ed26445d7b80690ebc08e18261e75f2f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/49b50357a6545cae8348e3059312f520.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e42887d9bf31c1dd99f13c39e63c9ab9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/03902478df1a55bc99703210bccab910.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://img.xkw.com/dksih/QBM/editorImg/2023/4/21/cea9447e-50d5-400b-9336-bc04808832dc.png?resizew=120)
您最近一年使用:0次