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1、学习好资料欢迎下载拓展题型二次函数综合题拓展一二次函数与线段和差问题针对演练1.(2016 贺州 10 分)如图，矩形 OABC 的边 OA 在 x 轴上，边 OC在 y 轴上，点 B 的坐标为(10，8)，沿直线 OD 折叠矩形，使点A 正好落在 BC 上的 E 处，E 点坐标为(6，8)，抛物线 yax2bxc 经过 O，A，E 三点(1)求此抛物线的解析式；(2)求 AD 的长；(3)点 P 是抛物线对称轴上的一动点，当PAD 的周长最小时，求点 P 的坐标第 1 题图学习好资料欢迎下载2.(2016 大连 12 分)如图，在平面直角坐标系xOy 中，抛物线yx214与 y 轴相交于点
2、A，点 B 与点 O 关于点 A 对称(1)填空，点 B 的坐标是 _；(2)过点 B 的直线 ykxb(其中 k0)与 x 轴相交于点 C，过点 C作直线 l 平行于 y 轴，P 是直线 l 上一点，且 PBPC.求线段 PB 的长(用含 k 的式子表示)，并判断点 P 是否在抛物线上，说明理由；(3)在(2)的条件下，若点C 关于直线 BP 的对称点 C恰好落在该抛物线的对称轴上，求此时点P 的坐标第 2 题图文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR
3、5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U
4、5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV
5、6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D
6、4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ
7、4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8
8、G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文
9、档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10学习好资料欢迎下载3.如图，抛物线 yx2bxc 与 x 轴交于 A、B 两点，与 y 轴交于点 C，点 O 为坐标原点，点E 在抛物线上，点F 在 x 轴上，四边形 OCEF 为矩形，且 OF2，EF3.(1)求抛物线的解析式；(2)连接 CB 交 EF 于点 M，再连接 AM 交 OC 于点 R，连接 AC，求ACR的周长；(3)设 G(4，5
10、)在该抛物线上，P 是 y 轴上一动点，过点P 作PHEF 于点 H，连接 AP，GH，问 APPHHG 是否有最小值？如果有，求出点 P 的坐标；如果没有，请说明理由第 3 题图备用图文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3
11、P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编
12、码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y
13、7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A
14、6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P
15、7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q
16、6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X
17、10Y8G3P10学习好资料欢迎下载【答案】1解：(1)四边形 OABC 是矩形，B(10，8)，A(10，0).(1 分)又抛物线 yax2bxc 经过点 A(10，0)、E(6，8)和 O(0，0)，22101006680abcabcc，解得131030abc，抛物线的解析式为y13x2103x；(3 分)(2)由题意可知：ADED，BE1064，AB8，(4 分)设 AD 为 x，则 EDx，BDABAD8x，在 RtBDE 中，ED2EB2BD2，即 x242(8x)2，(5 分)解得 x5，即 AD5；(6 分)(3)由(2)可知，D 点的坐标是(10，5)，PAD 的周长 lPAP
18、DADPAPD5，(7 分)抛物线的对称轴是线段OA 的垂直平分线，点 P 是抛物线对称轴上的一动点，POPA，lPAPD5POPD5，当 POPD 最小时，PAD 的周长 l 最小，文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P
19、10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码
20、:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7
21、O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6
22、 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7
23、C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6
24、 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X1
25、0Y8G3P10学习好资料欢迎下载即当点 P 移动到直线 OD 与抛物线对称轴的交点处时POPD最小，(8 分)设直线 OD 的解析式为 ykx，将 D 点坐标(10，5)代入得：510k，解得 k12，直线 OD 的解析式为 y12x，(9 分)当 x5 时，y52，P 点的坐标是(5，52)(10 分)2解：(1)(0，12)；(2 分)【解法提示】由 yx214得：A(0，14)，点B、O 关于点 A 对称，B(0，12)(2)直线 BC 过点 B(0，12)，直线 BC 解析式为 ykx12，(3 分)C(12k，0)，又P 是直线 l 上一点，文档编码:CR5Y7O7U5A6 HV6
26、P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4
27、Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4
28、X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G
29、3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档
30、编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5
31、Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5
32、A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10学习好资料欢迎下载可设 P(12k，a)如解图，过点P 作 PNy 轴，垂足为 N，连接 PB，第 2 题解图 则在 RtPNB 中，由勾股定理得：PB2PN2NB2，PBPCa，a2(12k)2(a12)2
33、，(5 分)解得 a21144k，PB21144k，P 点坐标为(12k，21144k)，(6 分)当 x12k时，y21144k，点 P 在抛物线上；(7 分)(3)如解图，由 C在 y 轴上，可知 CBPCBP，第 2 题解图 PBPC，文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O
34、7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6
35、HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C
36、7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6
37、ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10
38、Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P1
39、0文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:
40、CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10学习好资料欢迎下载CBPPCB，PCC B，PCBABC，C B PCBPABC60，PBC 为等边三角形，OB12，BC1，OC32，PC1，P(32，1)(12 分)3解：(1)四边形 OCEF 为矩形，且 OF2，EF3，C(0，3)，E(2，3)，将 C(0，3)，E(2，3)代入抛物线解析式yx2bxc 得，3423cbc，解得23bc，抛物线的解析式为yx22x3；(2)由(1)得 yx22x3，令 y0，得 x22x30，解得 x11，x23，A(1，0)，B(3，0)，AO1，BO3，又C(0，3)，文档
41、编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5
42、Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5
43、A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6
44、P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4
45、Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4
46、X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G
47、3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10学习好资料欢迎下载OC3，在 RtAOC 中，由勾股定理，得AC2210AOOC，COBO3，OF2，OBCOCB45，AF3，BF1，MFBF1，ROMF，AROAMF，
48、ROAOMFAF，113RO，解得 RO13，CR31383，在 RtAOR 中，AR221101()33，ACR的周长为108310384 103；(3)存在点 P，使得 APPHHG 的值最小如解图，取 OF 中点 A，连接 A G 交直线 EF 的延长线于点 H，过点 H 作 HP y 轴于点 P，连接 AP，此时，APPHHG 的值最小，文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10
49、文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:C
50、R5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7U5A6 HV6P7C7D4Q6 ZQ4X10Y8G3P10文档编码:CR5Y7O7