如图,已知抛物线经过原点O和x轴上另一点A,它的堆成轴为x=2,直线y=-2x-1经过抛物线上一点B(-2.m),且与y轴,直线x=2,分别交与D、E,(1)求m的值、(2)抛物线的解析式.(3)求证、BD=DE.
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/30 06:12:59
![如图,已知抛物线经过原点O和x轴上另一点A,它的堆成轴为x=2,直线y=-2x-1经过抛物线上一点B(-2.m),且与y轴,直线x=2,分别交与D、E,(1)求m的值、(2)抛物线的解析式.(3)求证、BD=DE.](/uploads/image/z/3753930-66-0.jpg?t=%E5%A6%82%E5%9B%BE%2C%E5%B7%B2%E7%9F%A5%E6%8A%9B%E7%89%A9%E7%BA%BF%E7%BB%8F%E8%BF%87%E5%8E%9F%E7%82%B9O%E5%92%8Cx%E8%BD%B4%E4%B8%8A%E5%8F%A6%E4%B8%80%E7%82%B9A%2C%E5%AE%83%E7%9A%84%E5%A0%86%E6%88%90%E8%BD%B4%E4%B8%BAx%3D2%2C%E7%9B%B4%E7%BA%BFy%3D-2x-1%E7%BB%8F%E8%BF%87%E6%8A%9B%E7%89%A9%E7%BA%BF%E4%B8%8A%E4%B8%80%E7%82%B9B%28-2.m%29%2C%E4%B8%94%E4%B8%8Ey%E8%BD%B4%2C%E7%9B%B4%E7%BA%BFx%3D2%2C%E5%88%86%E5%88%AB%E4%BA%A4%E4%B8%8ED%E3%80%81E%2C%EF%BC%881%EF%BC%89%E6%B1%82m%E7%9A%84%E5%80%BC%E3%80%81%EF%BC%882%EF%BC%89%E6%8A%9B%E7%89%A9%E7%BA%BF%E7%9A%84%E8%A7%A3%E6%9E%90%E5%BC%8F.%EF%BC%883%EF%BC%89%E6%B1%82%E8%AF%81%E3%80%81BD%3DDE.)
xTn@R,9b:v7$vj m E<ŭ)P@ZҴH'!筿N҇>"(˽9qxs
/3'Fkaٝ־9Ɲr??>oVpyY-Am;ܗxu,u Ed}@O*aq",x$]N{`5<4I@8Y|h֡(ՙ#[RPItZYh"êh:0orێ̿Y&N3PuXTrn Ui)y3l+b.ƐdĐ(nG8юL$X(/db%dlYFhQ>fZ )#g"DK$"HdkE2e!f"-$DLZ`]\B{@|s@B