2005 1 19 8 1 ( 2) 0 +4 2 2 2(x 1) x 20 8 x x 2 (k 1) x 6=0 2 k 21 8 P 1 P P 2 S P =4 S P P 22 10 02 5 06 (1) y y=ax 2 (2) 01 23 12 4 1 1 2 2 3 c a b 1 2 24 12 1 2 =a =b =c r 21 8 x 3 3x 2 + 2x = 0 1 13 7/20/2006
22 8 4 4 1 1 = = 2 23 8 7 m 298 300 300 300 302 440 300(1), (2)? 24 10 40 =5m 2m 25 12 18 m 1 x m y 2 (m ) y x x 2 x 26 12 2 2 2 2 1 2 2 a + b c s = a b 4 2 a b c s s = p( p a)( p b )( p c ) a + b + c p = 2 5 7 8 s 27 14 y x 2 0 8 0 P 2 P P Q Q 2 Q Q Q 2 13 7/20/2006
21 29 (-1) 0 + 8 + 1 2 + 1 2 1 22 29 1 = 1 x 1 + x 23 210 1 36 1 2 160cm 3 01cm 24 210 y=-2x+2 x Rt =90 x 1 2 25 211 150 60% 200 1 1 450 1 2 1 5 1200 26 211 H P x x 2-6 3 x+36(cos 2 c-cosc+1)=0 1 = 2 P=9 3 13 7/20/2006
27 2 4 y=ax 2 +bx+c a 28 2 6 =2 1 2 0 17 (1) 12-2 sin 60 ( 5 + 2) (2) 5 3 = x 1 x + 1 18 = = 19 ( ) 2004 2 610 ( 290 ) 374 931 1 305 2004 ( ) 20 ( ) ( ) ( ) 21 ( ) xcm 10cm 80cm 100cm 2 x 22 ( ) (1) ( (2) (1) (3) 36 ( ) 10 23 ( ) H 1 500 180 H G H H 1500 1130 910 622 402 219 72 0 ( 1130 402) 180 = 8736 87 ( ) (1) ( 1 ) 1500 (2) 66 24 ( ) 1 x y ( ) 1 t (1) t (2) S S 3 t (3) 2 2 21( 7 ), :,,, 4 : ; ; ;,, 4 13 7/20/2006
22( 8 ), (2,1), P, P P,, P1,P2,,Pk,( k PK, ) 23( 8 ),,,=6,=5,, : 24( 10 ), 550,,,, 100, 20%, 10%,? 25( 10 ),, 2,, y = x + c GH 5:1, :(1) c ;(2) MNPQ 26( 12 ), = 60, = 24 cm, = 16cm P, ; Q, P 4cm /, Q 2cm /,, :(1), PQ?(2) (1),P,Q? 19 8 2 ( 3 1) 0 + 1 1 2 y = x + 1 20 8 2 2 x + y = 5 (1) (2) 21 10 G H H=G 22 10 S / n 1 S n 2 63 10 26 5 13 7/20/2006
23 12 =10 H H=2 1 2 P P P=2 5 P 24 12 x x 2 (k+2)x+5=0 S S =1 5 1 0= k= 2 P Q 1 P Q Q QM M PM t t PM G 25 4 G = 26 6 m m>0 20 8 3 19 8 ( 4) 4 + 2sin30 2 1 0 20 8 M 1 M M 2 M= M M 21 21 8 30 16 45 2 22 10 y = x 4x+ 1 6 13 7/20/2006
x x1 0 x2 0 x 2 + x 2 1 2 23 12 a m 2a 1 120 30cm 2 1 23 2 24 12 R x 1 0 5 0 y x P a 0 x P H P H R P PH P a a=6 P 6 5 4 3 2 1 H P -2 2 4 6 8-1 -2-3 ( 25 ) 25 14 4 =30 1 1 =a =h a=40 h a=40 x h x a=40 2 1 s1 2 s2 s1 s2 a=40 19 8 20 8 x= 2, y = 1 P Q P Q Q P 21 10 2,0 2,0 1 7 13 7/20/2006
22 10 H H H 2 6 23 10 22 5 6 120 9 8 100 24 12 P P Q Q Q Q Q cm Q Q Q Q Q Q 1 1 Q Q 2 1 Q Q 25 x y 5 4 x P P y = x 2 + bx+ c b c l l Q Q l x y 5 8 4 M M y = x 2 + kx k 5 x 19 ( 8 ) 12 1 2 3 (2 3)2 ; 20 ( 8 ) 21 ( 8 ) 6 x y y S S 1 3 8 13 7/20/2006
x y 22 ( 10 ) ( ( ) 2 3 ( ) 23 ( 12 ) ( 60 60 ) 50 90% 24 ( 12 ) = M M 2 1 2 2 M 3 cot M Q P 25 ( 14 ) Rt 4cm P Q P 1cm/s P 2cm/s x(s) x PQ PQ y(cm 2 ) 0 x 2 y x 0 x 2 PQ PQ x ( ) 9 13 7/20/2006
22 y M x, M M x (-3 0), (5,0) M, 23 01 =8, = 2 2,, PQ MN tan G, GH H G x HG y y x =2 MN 10 13 7/20/2006
PQ 2 y = ax + bx+ c (0,0),(4,0),(5,5) y 5 l, tan = l, P 9 P PQ y Q P P,Q, P 2 0 2 2 3 2 19 + 2 2 3 a x bx 3 a b 20 x = x=2 a 0 b 0 2 3 b a 22 (-2,-3),(1,3) ; P(-1,1)? 23,,=, G, H, G G 3, 24 x x 2 2(m+1)x+m=0 m, ; m,, 25,,,, i1, =775,, i2(i1<i2) M=h, s 2 (1) i2=1:17,h=3, M (1) i1 i2 h, S ( i1 i2 )( i, i= h l, 1:m ) M 26 1994 2004 1 2 15% 11 13 7/20/2006
( ) 27 y=-x 2-2kx+3k 2 k>0 x, y, y ( ), =4,G ( ), G x P (1) ; (2) G, tan P (3) G, GM, H, P M, N, MN=t,GM=u, u t Y Y G G P X P H M N X 19 :( - 2) 2 - (1-2 ) 0 20 : 21, x 1, x 2 3x 2 +2x 1=0, x 2 1 +x 2 2 22,, = : = 23 3, 3 3, 12 13 7/20/2006
21, 36, 8, 30 0, 9, 60 0, 11,? 60 0 300 25, o,, (1) : 2 = (2), ; (3) (1), 26 y=x 2 +bx a 2 (1) a b, (2) 1,2,3,a b, 27 : 1,P ( ), P PQ Q, Q QR R, R RS S P=x,S=y (1) y x, (2) SP=1/4, P (3) S P T P S,P S T P P S?( ) S P R Q 13 13 7/20/2006