二次函数的图像专项练习题

1)0(2acbxaxy0ax2311xxayaa.12112xxmymm.542xxy1)2(52)222(522225422222222xxxxxxxy144,222abacab1)2(44)2(542222xabacabxxxy322xxy1122xxy7422xxyayxx462xxy1)1(52xyxy1.cbxaxy2=acb420x=acb42=0x=acb420x2.cbxaxy2xy=0x1x2x10x20cbxaxy2yx=0y0ycbxaxy2yxyxa0abx2)44,2(2abacababac442abx2abx2a0abac442abx2abx22162xxy542xxy162xxy38542xxy21.385921162xxy59542xxycbxaxy2cbxaxy2),(nmnmxay2)(nmxay2)(ax10x20x))((21xxxxay))((21xxxxaya1cbxaxy2(12)(11)(03)212(35)xxy562xxy122xxy4)3(2xy3)2(2xy122xxy542xxy31.cbxxy2(38)(58)Ax4B.x3C.x5D.x12.abc=09a3bc=0,y=ax2bxcA.B.C.D.3.MNyMyx12Nyx3Mabyabxabx2()A.92B.92C.92D.924.1822xxyA-27B-2-25C27D2-9522yxxxyA22yxxB22yxxC22yxxD22yxx62365yxxA(18)B(18)C(12)D(14)7.y=x23x+2y()A(02)B(1O)C(03)D(0O)8.2yaxbxcA301x24bac0bc20ab0abcABCD9.2(1)2yxA(-1-2)B(1-2)C(-12)D(12)10.=yax2+bx+c5aca+b+c4a2b+c2a+b2ab0A2B3C4D5Oyx1x(30)A8411.y=(x+1)2+2ABCD221-3312.y=ax2+bx+ca03abc02a+b04a2b+c0A0B3C2D112131513.2yaxbxc10a21c30b40abc50abcA2B3C4D514.0aaxy2axy15.cbxaxy26Aa0B.abc0C.cba0D.acb42016.22xy2A222xyB222xyC2)2(2xyD2)2(2xy17.(1)(3)(0)yaxxaA1xB1xC3xD3x18.2yaxbxc0a20040bcbac0abcA1B2C3D4x1y2111Oyx11AxyO11BxyO11CxyO11D1Oxy31Oxyx519.2(0)yaxbxca1xA0cB20abC240bacD0abc20.y2x23Ay2x23By2x23Cy2x32Dy2x3221.22yx1A22(1)yxB22(1)yxC221yxD221yx22.61l2m4m62A22yxB22yxC212yxD212yx23.9,212yxbxcxA(40)B(10)yC12EABEF//ACBCFCECEFBEF2E;xyOCA111Oxy196162624.2334yxxAB34yxbBC34yxbyE1BC2ABC3MAB1ABABNBC2BCtMNBStMMNB7220109,212yxbxcxA(40)B(10)yC12EABEF//ACBCFCECEFBEF2E;32010cbxxy2x10y03b,cyx6.,24yxxxBO,A,AB,ABy,O,l,Pl.(1)A;(2)ABOP,,P;xy31OxyOBCAl0yx-1-2-4-3-1-2-4-31243512382y=x2+(1-2a)x+a2(a0)xAx1,0B(x2,0)(x1x2)1aAB2yCOA+OB=OC-2a3y=x2+bx+c3,2,y=x2-3x+5,().A.b=3,c=7B.b=-9,c=-15C.b=3,c=3D.b=-9,c=21442.53.53.05121.80.25