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()___________________123361.A.B.C.D.2.n140nA.6B.7C.8D.93.nnA.3B.n1C.5D.n24.ABCDRPDCBCEFAPRPPBCBCRA.EFB.EFC.EFD.EF5.ABCDRPDCBCEFAPRPPBCBCRA.EFB.EFC.EFD.EF6.y2=x+3y1=2xAA.x3y1y23B.y1y2x1C.y10y200x3D.x0y10y237.ABCDBD21D12ACA.2B.3C.4D.68.ABCDBDECEFGBECEFGAB=6FGA.3B.4C.5D.69.2012.1040,14.x()A.B.C.D.10.y=2xy=ax+2bAm22xax+2bA.x1B.x1C.xD.x11.x-mmA.m=3B.m=C.m=1D.m=112.OABCB44EFBCBAOE=2EOF45FA.B.1C.D.-1103013.y=kxy=mxy=nxkmn________14.[abc]y=ax2+bx+cabc[m2m1]m________15.10________16.ABCDAECFAB=3BC________17.y=k-1x+k2-1k________.18.ABCD601+2=________19.ABCDOAO=CO________ABCD20.y=ax+by=kxP42xy________21.y=2x5y=3x+bP13________b=________22.22018020x________.43423.20cm20cm1.2m24.y=m2x+2m+31myx2m25.ABCDEBCBE=3ECAEDCFCD=6CF26.ABMCBADBMBADBEADECEEEFCEBDF1BF=FD2DACFEACDDCCACABDDA13.kmn14.215.3516.17.118.24019.BO=DO20.21.622.23.1.2m12026=21600cm220cm2026=600cm220cm202=100cm221600600100=21024.1m20m2m2yx2m202m+30m2m225.ABCDADBCAD=BCCEFDAFCFDF=CEADBE=3ECCEBC=CEAD=14CFDF=14CFCD=13CD=6CF=226.1BEADAEB=90RtAEBCBACE=AB=CBCEB=CBECEF=CBF=90BEF=EBFEF=BFBEF+FED=90EBD+EDB=90FED=EDFEF=FDBF=FD2ACFEACEFAC=EFBC=BFBA=BDA=45A=45ACFE