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1234

112008My=x-1M A10 B01 C10 D1122008 A(1-6) B24 C3-2 D-6-1)

32008 x(m,0) A2006B2007C2008D2009

42008x2yA4 B6 C8 D10

5

2

3200820085128.0t

42008ABCDOPOO C D OtsAPB=yyt

5 ( 2008) , (), (1) , ; (2) , .(a) : (b) , :

6 (2008)AByx A12020B20012C60D10145185

312008yx

22008

4

511 (2008)30Aa0a3AA1015/4a/AA

Ay()x()

22008ymgxyx108mg1.6mg

32008AB10080A70B110AB/1AAByxAB

420085128643.8.y1()y2x().

y1xtWWt.

5

6212008xOyOxABFAxADFADOOMBDMxC.DCOD-24MCDC.

ABM M21CDCD

73BCABC

M1ABA,BNBC2BCtMNBstM MNB

84108201xyyx 2=-345/

2(2008)2040mt

t1361036m9490847624

1mt240320aa

1E,F,G,H G,F,E,HE,H,G,F G,H,E,F

12A,B,C,D 12A,B,C,D 12A,B,C,D 212

2 (2008)30ABAB=8BC=AD=4ACBDECD(1)1AC= BD= ABCD .(2)1.

(3)2ABAAB10ABDABCFGHFHBDPAF=tFBPSStt.

320082ABCD11ABADBCE22EABCEFADF33AFEA60 B67.5 C72 D75

420081ABCDGCD(GCD)CGABCDCEFGBGDEBGDE 11BGDE

1CEFGC() 23,2

246AB=aBC=bCE=ka CG=kb (abk>0)(1)5

511ABCABCABCA18002B A B C D

(2)ABCB(21)ABCBB1B1 A(4 1) B(01) C(11) D(10)

(3)PQR23P( )A(-2,-4) B(-2,4) C(2,-3) D(-1,-3)

11ABOCBOxOCyAB=1OB= ABOCO600EFODAEBFCDy=ax2+bx+cAED 1Ey2 3xPQOBPQABOC2PPQ

2OABCABCD,OAyCxB22 BCO= 60OHBCH.PHHOOQOOAA1.Pt. 1OH2OPQS. St.OPQ3PQOBM.OPM2S. OM.

2DEFEABCACDEFEDEABPEFBCQ

AC30cmPQEPQS(cm2)(1)S.(2)SEPQS.,

3()RtABCA=900,AB=AC,BC=4 DEFGGFDEDEBCAB,ACG,FAB,AC 1DEFG

2ABCDEFG1BCDCxDEFG21BDGGx2ABCDEFGyyx

32008,CBD,BDABBD,EDBD,ACEC.AB=5,DE=1,BD=8,CD=x.(1)xACCE(2)C,ACCE? (3)(2), .

2008

1(2008) PABCPAMMBNNC1MNMN_____________22008P

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1(08)7.5200601628788628788628788628788628788

2600800

220081953 0.10.41257.87.70.41255122288.05254216.4 A22 B34 C40 D251

320081216626188 A54B90C102D114

1ABOCABCCDABDADaDBb

2A(30)B(04)P PPCxCPDyDABCDABCD

60%30%

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