1、 6 3 18 1. . A 2 0 =0 B | |= C D 2 2 =4 : ZXXK B A 2 0 =1 B | 2 |= 2 C 4 =2 D 2 2 = 4 B 1. 2. 3. 4. . 2. O . A B C D A : O A A . 3. . A B C D D. , D. . 4. 1 100 2 1 10% 1 80 2 1 1 . A 880 B 800 C 720 D 1080 A 5. AB P1 P2 P3 P4 P P . A 1 B 2 C 3 D 4 C. P , P AB C AB 3 P P1 P3 P4 C. . 6. y=a x 2 2 +c
2、x=x1 y1 x=x2 y2 |x1 2| |x2 2| . A y1+y2 0 B y1 y2 0 C a y1 y2 0 D a y1+y2 0 C a 0 a 0 y1 y2 0 1 2| |x2 2| 1 y2 y1+y2 a y1 y2 0 0 1 2| |x2 2| 1 y2 y1+y2 a y1 y2 0 a y1 y2 0 C . : ZXXK 6 3 18 7. m n |m+n 2016|=_ 2016 m+n=0 |m+n 2016| n 2016|=| 2016|=2016 2016 1. 2. . 8. y= 1 x x x 0 0 x x . 9. 3 5 6 9
3、 1 2 3 5 6 9 3 5 6 3 5 9 3 6 9 5 6 9 3 5 6 5 6 9 = 2 4 = 1 2 1 2 1. 2. . 10. x 1 xa x x 1 a x 1 xa x x 1 . 11. ABCD AC BD O EF OA AD OA E F AB=6cm BC=8cm = cm 13 OD= 1 2 BD=5cm AE=EO =DO+AD ABCD AB=6cm BC=8cm AC=BD= 2 2 BC AB = 22 68 =10 cm 1 2 BD=5cm OA EO+OD+ED=OD+AD=5+8=13 cm 13 1. 2. 12. 6 7 8 3
4、 3 4 1 1 1 1+1+4=6 2 1 2 2 1 1+2+4=7 3 2 2 2+2+4=8 6 7 8 6 7 8 . 11 84 13. 1 = x=2 a 2 1 1 a 1 a=3 2 1 2 a a 4. . 14. 2 1 2 3 3 4 5 1 2 6 1 3 : ZXXK 2 6 6 2 6 2 2 6 2 6= 1 3 15. 1 2 1 1 1 MON N 2 2 ABCD ABCD 1 MON 4 ABCD ABCD 1 2 . 1 O OM N MN 2 1 O OM N MN 1 2 MON 5 20 2 3 1. 2. . 16. 10 1 8 2 10 s
5、 2 s 2 3 7 9 1 8 2 s 2 s 2 3 1 2 3 7 9 1 8+9+8+8+7+8+9+8+8+7 2 s 2 s 2 3 7 9 7 9 17. 50 32 Q s 150 26 1 AB BC 2 6 1 AB Q= 0.08s+36 BC Q= 0.06s+35 2 14 . 1 AB Q=k1s+b1 k1 b1 BC Q=k2s+b2 k2 b2 2 6 s s=350 1 AB Q=k1s+b1 A B 11 1 50 32 36 kb b 1 1 0.008 36 k b Q= 0.08s+36 BC Q=k2s+b2 B C 22 2 50 32 26 2
6、 150 kb b k 2 2 0.06 35 k b Q= 0.06s+35 2 6 0.06s+35 0.08s+36 =6 s=350 s=350 Q= 0.06s+35=14 14 . 1. 2. . 18. D E BC BA DE F DE AF=AE 1 ACEF 2 ACEF 1 2 1 CE=AE=BE AF=CE 2 AC=CE AC=CE=AE 1 E BA D BC ACEF 2 ACEF 1 AE=CE 1. 2. 3. 4. . 19. AB A 36.5 5 M A 10 N sin 1 M N 2 N M 0.1 1 29 km 2 1 M CM AC NE A
7、E MD ND MN 2 ND MD = 2 5 =0.4km N M 1 M AM=5km 5 CM =0.6 AC= 2 2 CM AM =4km AN=10km 10 NE =0.6 AE= 22 AN NE =8km CM=AE CM=8-3=5km ND=NE DE=NE AC=6-4=2km MN= 2 2 ND MD = 29 km 2 ND MD = 2 5 =0.4 km N M . 20. AC OB PA A PB AC M 1 PB 2 OB=3 PA=6 MB MC 1 2 MB=4 MC=2 1 OB PM 2 MB AM = OB AP = OM PB 1 A 2
8、 MB AM = OB AP = OM PM 6 MB MC = 1 2 3 6 MC MB = 1 2 26 2 6 6 MB MC MC MB 2 4 MC MB OB=3 PA=6 MB=4 MC=2 1. 2. 3. 4. . 21. y= x 0 ABOC AC AB E F E AC 1 1 ABOC k=2 BF FA= 2 2 ABOC k=2 BF FA= 3 2 k 0 BF FA 1 2 1 1 1 2 1 1 3 . 1 ABOC E 2 1 A 2 2 F 2 F 1 2 2 ABOC AB=2b AC=2a E 2b a A 2b 2a F b 2a 3 k 0 AB=2b AC=2a E 2b a A 2b 2a E y= k x