在平面直角坐标系中,二次函数y=ax2+bx+c(a>0)的图像的顶点为D点,交y轴于C点,叫x轴于A.B两点,A点在原点左侧,B点的坐标为(3,0),OB=OC,tan∠ACD=3/1,求这个二次函数的表达式.(2)经过C、D两点的直线,与X
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/04 20:04:10
![在平面直角坐标系中,二次函数y=ax2+bx+c(a>0)的图像的顶点为D点,交y轴于C点,叫x轴于A.B两点,A点在原点左侧,B点的坐标为(3,0),OB=OC,tan∠ACD=3/1,求这个二次函数的表达式.(2)经过C、D两点的直线,与X](/uploads/image/z/2588070-30-0.jpg?t=%E5%9C%A8%E5%B9%B3%E9%9D%A2%E7%9B%B4%E8%A7%92%E5%9D%90%E6%A0%87%E7%B3%BB%E4%B8%AD%2C%E4%BA%8C%E6%AC%A1%E5%87%BD%E6%95%B0y%3Dax2%2Bbx%2Bc%28a%3E0%29%E7%9A%84%E5%9B%BE%E5%83%8F%E7%9A%84%E9%A1%B6%E7%82%B9%E4%B8%BAD%E7%82%B9%2C%E4%BA%A4y%E8%BD%B4%E4%BA%8EC%E7%82%B9%2C%E5%8F%ABx%E8%BD%B4%E4%BA%8EA.B%E4%B8%A4%E7%82%B9%2CA%E7%82%B9%E5%9C%A8%E5%8E%9F%E7%82%B9%E5%B7%A6%E4%BE%A7%2CB%E7%82%B9%E7%9A%84%E5%9D%90%E6%A0%87%E4%B8%BA%EF%BC%883%2C0%EF%BC%89%2COB%3DOC%2Ctan%E2%88%A0ACD%3D3%2F1%2C%E6%B1%82%E8%BF%99%E4%B8%AA%E4%BA%8C%E6%AC%A1%E5%87%BD%E6%95%B0%E7%9A%84%E8%A1%A8%E8%BE%BE%E5%BC%8F.%282%29%E7%BB%8F%E8%BF%87C%E3%80%81D%E4%B8%A4%E7%82%B9%E7%9A%84%E7%9B%B4%E7%BA%BF%2C%E4%B8%8EX)
xKOQ118a0L4겻f.VBSR#
Īբ.bht bϙW~uӸmÜ/'z!^3~J?m"BUkZG
Ҡeos.:RxAQihFO8e,#H-~Gv%iڝn.v\&G<~*.^}N[)$itvwD(7F/sAې{M Rot(f9wh%Q
ZYOԌ]
>&Gm'cjuƤ(