1、 1 / 11 ( )2016 120 120 3 36 1 A 6 A ( ) A 6 6 B 6 C 6 D 3 3 2 364.7 “ 364.7 ” A. 3.647 10 10B. 36.47 10 10C. 3.647 10 11D. 3.647 10 93 n n n+1 n ( ) A 5 B 6 C 7 D 8 4 P(m 2 n 2 ) ( ) A B C D 5 x y , |m n| ( ) A 5 B 3 C 2 D 1 6 ABC C=90 0 AC=BC AD BAC DE AB E AB=12 cm DBE ( ) A 12 cm B 11 cm C 14 cm
2、 D 10 cm 7 a b=3 ab=1 a 2 +b 2 =( ) A 5 B 7 C 9 D 11 8 x m ( ) A 4 B 3 C 3 D 1 9 ABCD AC BD 6 cm 8 cm AE BC E AE ( ) 2 / 11 A cm B cm C cm D cm 10 ABC O AB=1 C=30 O ( ) A 2 B 4 C 8 D 16 11 y=mx+m y mx 2 +2x+2 m m A B C D 12 a+1 a+2 2 ( ) A B C D 4 20 13 x(x 2)=x _ 14 y=ax 2 +bx+c x=1 x A(3,0) ax 2 +
3、bx+c0 _ 15 ABC C=30 0 ABC A 60 0 ADE AE BC F AFB=_ 14 3 / 11 16 4 8 _ 17 ABC D E AB AC AED= B AE=2 ADE 4 BCED 5 AB _ 7 64 18 6 3a-2b=0 19 8 x l A B P x ABP 20 8 1 15 17 4 / 11 1 2 A 3 1500 21 10 ABC ABC=90 0 D AC BD A=2 1 E BC BE O D 1 AC O 2 A=60 0 O 2 22 10 30 A B C 64 4 B A C 水果品种 A B C 每辆汽车运装量（
4、吨） 2.2 2.1 2 每吨水果获利（百 元） 6 8 5 1 x A y B y x 5 / 11 2 Q Q x 23 10 “ “ “ “ 1 ABC CD AB ACD BCD “ ” S ACD =S BCD 1 2 ABCD AB=4 BC=6 E AD F BC AE=BF AF BE O i AOB AOE “ ” ii OD AOE DOE “ ” CDOF 2 ABC A=30 AB=4 D AB CD ACD BCD “ ” ACD CD A CD A CD ABC ABC 1/4 ABC 24 12 y=ax 2 +bx+3 x A B A l C A (1,0) C
5、 (4,3) 1 2 1 D BCD D 3 E 1 AC ACE 6 / 11 E 3 36 1 2 3 4 5 6 7 8 9 10 11 12 A A D D D A D B D A D B 4 20 13 x 1 =0 x 2 =3 14 1x3 15 90 016 2 17 3 7 64 7 / 11 18 6 = 5. 19 8 4 20 8 1 2 60 15%=400 A 80 400 360 0 =72 0 3 1500 (112 400)=420 420 21 10 1 OD=OB 1= ODB DOC= 1+ ODB=2 1 A=2 1 DOC= A A+ C=90 0
6、DOC+ C=90 0 OD DC AC O 2 A=60 C=30 DOC=60 Rt DOC OD=2 CD OD S 阴影=S COD S 扇形 DOE 3. 22 10 1 2.2x+2.1y x y)=64. 8 / 11 y x y x+40. x 4 y 4 x y 4 2x+40 4 x x+40) 4 14 x 18 2 Q=6 2.2x x+40)+5 2(x x+572. Q x 14 x 18 A 14 B 12 C 4 23 10 1 i ABCD AD BC EAO= BFO AOE= FOB AE=BF AOEFOB EO=BO AOE AOB “ ” ii AO
7、E DOE “ ” S AOE=S DOE AE=ED=12AD=3 AOB AOE “ ” S AOB=S AOE AOEFOB S AOE=S FOB S AOD=S ABF S 四边形 CDOF=S 矩形 ABCD 2S ABF 2 2 1 9 / 11 S ACD=S BCD AD=BD=12AB CD A A AD=A D=12AB=12 4=2 A CD ABC ABC 14 S DOC=14S ABC=12S BDC=12S ADC=12S A DC DO=OB A O=CO A DCB BC=A D=2 B BM AC M AB=4 BAC=30 BM=12AB=2=BC C
8、M ACB=90 AC ABC 12 BC AC 2 S ACD=S BCD AD=BD=12AB CD A A AD=A D=12AB=12 4=2 A CD ABC ABC 14 S DOC=14S ABC=12S BDC=12S ADC=12S A DC DO=OA BO=CO A BCD A C=BD=2 C CQ A D Q A C=2 DA C= BAC=30 CQ=12A C=1 S ABC=2S ADC=2S A DC=2 12 A D CQ=2 12 2 1=2 S ABC 2 24 12 1 A(1,0) C(4,3) y=ax 2 +bx+3 a+b+3=0,16a+4b
9、+3=3, a=1,b y=x 2 4x+3 10 / 11 2 1 y=x x+3=(x x=2 A B x=2 AC x=2 D D l y=mx+n A(1,0) C(4,3) m+n=0,4m+n=3. m=1,n l y=x 1 x=2 y D (2,1) 3 E E (x,x 2 4x+3), E EF x AC F x G C CH EF H F y=x 1 F (x,x 1) EF=(x (x 2 4x+3) x 2 +5x 4 S ACE=S AEF+S EFC=1/2EF AG+1/2EF CH=1/2EF(AG+CH)=1/2( x 2 +5x 4) 3=3/2( x 2 +5x 4) /2x 2 +15/2x 6. 320 x b/2a=5/2 S ACE 4ac b24a=4 ( 32) (152)24 ( 32)=278 E ( ) 11 / 11
