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1、文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M
2、7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V
3、4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1
4、T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S
5、3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T
6、3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2
7、E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CH7N5S3M7G1 HQ10P5T3V4Y8 ZS1C5N2E1T3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I
8、1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U
9、8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3
10、D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE
11、1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT
12、1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9
13、S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:
14、CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10
15、HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 Z
16、X9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编
17、码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K1
18、0 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1
19、 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文
20、档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3高二数学参考答案一、填空题：1,xR使得20 x2563（-3，4，-8）4220 xy5若0a或0b,则220ab6.1 或 3 7(x2)2+(y+1)2=2528129310.x+y-4
21、=0 11.1212m13 12,114-43二、解答题15（本小题满分14 分）证明：(1)取BE的中点为,P连,PGPF则BCFPABGP|,|面|ABC面FGP|FG面ABC6 分（2）取BC中点 M，连接DF交CE于点O，ABAC，AM BC，又面ABC面BCDE，AM 面BCDE，AM CE.10 分tanCED=tanMDC=2290OEDODE，90DOE，即 CE DM，CE面 ADM，文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K
22、10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L
23、1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3
24、文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G
25、8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F
26、9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1
27、M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T
28、6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3CEAD.14 分16.解：（1）750 xy.7 分（2）23100 xy.14 分17.（本小题满分14 分）证明：(1)11B BC中,因为N,Q分别为1BB,11BC的中点,1/QNBC,又1QNABC平面,11BCABC平面，所以1/QNABC平面3分矩形11AB BA中,因为M,N分别为1AA,1BB的中点,/MNAB，又1MNABC平面,1ABABC平面1/MNABC平面6分平面1/MNQABC平面7分(2)因为1AAABC平面,AB CP
29、ABC平面,故1AAAB,1AACP由(1)/MNAB得1AAMN,又11/AACC,所以1CCMN.9分又因为P为AB的中点,ACBC,所以CPAB因为CPAB,1CPAA所以11CPAAB B平面,又因为11MNAAB B平面,所以,CPMN,11分又因为1MNCC,所以1MNPCC平面,13分又MNMNQ平面,所以1MNQPCC平面平面.14分18.（本小题满分16 分）证明：假设11,baab都不小于2，2 分则112,2baab6分因为0,0ab，所以12,12baab，8分文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8
30、K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9
31、L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M
32、3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6
33、G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6
34、F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E
35、1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1
36、T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3112()abab10 分即2ab，12 分这与已知2ab相矛盾，故假设不成立 14 分综上11,baab中至少有一个小于2.1 6 分19.（本小题满分16 分）解：(1)设C的方程为22()25xmy(0)m解由题意设325 1720mm2分故1m.故C的方程为22(1)25xy.4分(2)由题设2551aa6分故21250aa,8分所以0a或512a.故实数a的取值
37、范围为5(,0)(,)1210 分(3)存在实数a,使得,A B关于l对称.PCAB,12分又0a或512a即12501)34(aaa或14分34a，存在实数34a,满足题设16 分20（本小题满分16 分）解：（1）设12,0,0A xB x，则12xx，满足220 xmx，所以文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D
38、8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1
39、I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1
40、U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S
41、3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:C
42、E1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 H
43、T1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX
44、9S3D8E1M3122x x.2分又C的坐标为（0，1），故AC的斜率与BC的斜率之积为2111xx由ACBC得1210 x x；矛盾4 分所以不能出现ACBC的情况.6 分（2）BC的中点坐标为（2122x，），可得BC的中垂线方程为22x122yxx（）.8分由已知可得12xxm，所以AB的中垂线方程为2mx.10分联立222122mxxyx x，又22220 xmx，可得212mxy，6 分所以过A、B、C三点的圆的圆心坐标为（122m，），半径292mr，14 分故圆在y轴上截得的弦长为22232mr（），即过A、B、C三点的圆在y轴上截得的弦长为定值.16 分文档编码:CE1I1T
45、6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F
46、6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8
47、E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I
48、1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U
49、8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3
50、D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE1I1T6G8K10 HT1U8F6F9L1 ZX9S3D8E1M3文档编码:CE