1、 2017 10 3 30 1 6 +6 8 A +8 B 8 C +14 D 2 2 5 27 3 6500 6500 A 65 10 2B 6.5 10 2C 6.5 10 3D 6.5 10 43 AB CD EF FC AFE A A B C D 4 A B C D 5 A 3 0 =1 B = 3 C 2 1 = 2 D a 2 3 =a 66 1 5 6 3 5 A 4 B 5 C 6 D 3.2 7 2 A B C D 8 2x 2 5x 1=0 2 + + A 13 B 12 C 14 D 15 9 P m m y= P PAB AB x POB A B 3 C D 10 AB
2、CD AE BD E CF BCD EA F BC=4 CD=2 BAE= CAD AE= AF=2 21 A 1 B 2 C 3 D 4 6 3 18 11 2a 3b=7 8+6b 4a= 12 1 3 104 3 2 116 1 1 21 13 s t s=60t t 2 14 ABCD AB=12 CD=12 ABED tanE= CE 15 5 1 2 3 4 5 2 16 ABC A 1 1 B 0 2 C 1 0 P 0 2 A P 1 P 1 B P 2 P 2 C P 3 P 3 A P 4 P 2017 9 72 17 18 19 4 4 16 4 1 1 2 6 2 2
3、2 6 20 21*cnjy*com 2014 2015 2016 2017 140 207 310 450 98 153 235 351 1 2014 2017 1% 2 2018 675 21 AB O C O AD C D AD O E CE CB 1 CE=CB 2 AC=2 CE= AE 22 y y x 1 y y x 2 23 x x 2 m+1 x+ m 2 +1 =0 1 m 2 y=x 2 m+1 x+ m 2 +1 x 3 2 3 2 y=2x+n n m n 2 4n 24 Rt ABC D B AC DAC BAC DA=DC B BE DA DC E M AB MD
4、 ME 1 1 MD ME 2 2 MD ME 3 3 25 ABCD AD x C y BC AD BC=3 OD=2 A B l y= 2x 10 x E BC F AE t t 0 1 ABCD 2 ABCD l S S t 3 t=2 EF PM BC M x N PMF EF PTF P T P 2017 10 3 30 1 6 +6 8 A +8 B 8 C +14 D 2 11 6 +6 8 8 B 2 5 27 3 6500 6500 A 65 10 2B 6.5 10 2C 6.5 10 3D 6.5 10 4 1I a 10 n 1 |a| 10 n n a n 1 n 1
5、 n 6500 6.5 10 3 C 3 AB CD EF FC AFE C=25 A A B C D JA AFE A CD EF C= FC AFE AFE=2 AB EF A= D 4 A B C D I8 C 5 A 3 0 =1 B = 3 C 2 1 = 2 D a 2 3 =a 6 47 22 6E 6F A 3 0 =1 A B =3 B C 2 1 = C D a 2 3 =a 6 D A 6 1 5 6 3 5 A 4 B 5 C 6 D 3.2 W7 W1 W4 W5 A 1+5+6+3+5 5=4 B 5 2 3 C 1 3 5 5 6 5 5 D 1 4 2 + 5
6、4 2 + 6 4 2 + 3 4 2 + 5 4 2 =3.2 C 7 2 A B C D MO MN 1 R 2 2 S= Rl R R=12 B 8 2x 2 5x 1=0 2 + + A 13 B 12 C 14 D 15 AB 2 1=0 2 +1 2 + + 5 + + +1 + 21 2x 2 5x 1=0 2 1=0 2 +1 2 + + +1+ + + + +1 2x 2 5x 1=0 + 2 + + +3 +1=12 B 9 P m m y= P PAB AB x POB A B 3 C D G5 k G6 KK P B PD OB P m m y= m= m=3 PD=
7、3 ABP BD= PD= S POB = OD+BD D 10 ABCD AE BD E CF BCD EA F BC=4 CD=2 BAE= CAD AE= AF=2 21 A 1 B 2 C 3 D 4 S9 LB BAE= ADB BAE= CAD tan DBC= = DBC BD= =2 AE= ACB EAC=2 ACF EAC= ACF+ F ACF= F AF=AC AF=2 ABCD AE BD ADE+ DAE= DAE+ BAE=9 BAE= ADB CAD= ADB BAE= CAD BC=4 CD=2 tan DBC= = DBC BD= =2 AB=CD=2 AD
8、=BC=4 ABE DBA AE= CF BCD ACB AD BC DAC= BAE= ACB 2 ACB EAC=2 ACF EAC= ACF+ F ACF= F AF=AC AC=BD=2 AF=2 C 6 3 18 11 2a 3b=7 8+6b 4a= 6 33 2a 3b=7 8+6b 4a=8 2 2a 3b =8 2 7= 6 6 12 1 3 104 3 2 116 1 1 48 21 * 9A 1 x y 3 104 3 2 116 x y x y x+y 1 x y x+y=20+28=48 48 13 s t s=60t t 2 20 HE s=60t 1.5t 2 s
9、 s=60t t 2 = t 20 2 +600 t=20 s s=600 20 14 ABCD AB=12 CD=12 ABED tanE= CE 8 T9 A D F G Rt ABF AF DG Rt CDG CG Rt DEG GE CE=GE CG 21 cn jy com A D AF BC DG BC F G Rt ABF AB=12 sin B= AF=12 =6 DG=6 Rt DGC CD=12 DG=6 GC= =18 Rt DEG tanE= = GE=26 CE=GE CG=26 18=8 CE 8 8 15 5 1 2 3 4 5 2 2-1-c-n-j-y X6 1 2 3 4 5 1 2 1 3 1 4 1 5 1 2 1 2 3 2 4 2 5 2 3 1 3 2 3 4 3 5 3 4 1 4 2 4 3 4 5 4 5 1 5 2 5 3 5 4 5 20 8 P = = 16 ABC A 1 1 B 0 2 C 1 0 P 0 2 A
