已知
,当
时,
;当
时,
.
求k、b的值;
当x取何值时,y的值小于10?
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/96cbd64adfd7446789fe2988c7d18301.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e9dfde5623366de792e101c74146ee4a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e89cc1adaf80c7aec0d62d5d85b82355.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/698d8ff88899f3e683a7aa7ce8f0fc28.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/f2d6fd37abc8300d744d0f4d56029a0a.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/4141b26d2c32655003494a91ad6331b5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/65863c1abad833b79c303bfca24f535c.png)
更新时间:2017-07-14 21:52:46
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【推荐1】解不等式或不等式组,并把解集在数轴上表示:
(1)
﹣
<1;
(2)
.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a0d82a3ccf18a0f935be618b5dfa08b0.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/a581da730d897a251af68e49181c4daf.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/61ae5e37da643c6122840ef589e193ea.png)
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【推荐2】分解因式:
(1)
;
(2)
.
解不等式(组):
(3)
;
(4)解不等式组:
,并写出其整数解.
(1)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/79bcc038ce385b8065ca38452b745f1f.png)
(2)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/9bdeb728de462f780be96acc8a4def14.png)
解不等式(组):
(3)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/e1a0f6cbecb6cc403bdb7db058cbbaf6.png)
(4)解不等式组:
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/b0b02bf64648563ea6d0b24c2d077d91.png)
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【推荐1】综合与探究
如图,抛物线
与
轴交于
,
,与
轴交于点
.作直线
,
是抛物线上的一个动点.
的函数表达式.
(2)当点P在直线
下方时,连接
,
,
.当
时,求点P的坐标.
(3)在抛物线的对称轴上是否存在点
,使以
,
,
,
为顶点的四边形是平行四边形?若存在,请直接写出点
的坐标;若不存在,请说明理由.
如图,抛物线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2a9553fb9beb9ed49ea5f7a0f077884d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/81dea63b8ce3e51adf66cf7b9982a248.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5cd99c5000629d7f49499d666e68f40d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7291b3d921f595f28960abcdce6dfbed.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/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
(2)当点P在直线
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/0dc5c9827dfd0be5a9c85962d6ccbfb1.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/63a253c7fdf589ee3dece13d5b5b5732.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2cdba1337ec85fa9722cb4b320a82ae6.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/abd13974aebe38eb2a1d744a01ea5aa5.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/2f4baf7257ca8471f8dbb08dcb118901.png)
(3)在抛物线的对称轴上是否存在点
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/dad2a36927223bd70f426ba06aea4b45.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/7f9e8449aad35c5d840a3395ea86df6d.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/c5db41a1f31d6baee7c69990811edb9f.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/acc290b44635265137fdf13146b6a6d9.png)
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【推荐2】如图,四边形ABCD为正方形.点A的坐标为(0,2),点B的坐标为(0,-3),反比例函数
的图像经过点C,一次函数
的图像经过点C,一次函数
的图像经过点A.
(2)求点P是反比例函数图像上的一点,△OAP的面积恰好等于正方形ABCD的面积,求P点的坐标.
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/07854693dd2e33f66030d6106eb6e0ee.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e136e7637543c8ae92c8dcd55b31924.png)
![](https://staticzujuan.xkw.com/quesimg/Upload/formula/5e136e7637543c8ae92c8dcd55b31924.png)
(2)求点P是反比例函数图像上的一点,△OAP的面积恰好等于正方形ABCD的面积,求P点的坐标.
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