【一道初三二次函数题!如图,抛物线Y=-1/2X^2+BX+C与x轴交于A,B两点,与y轴交于C点,且OA = 2 ,OC = 3.(1)求抛物线的解析式;(2)作Rt△OBC的高OD,延长OD与抛物线在第一象限内交于点E,求点E的坐标;(3)在x轴上
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/09 02:08:36
![【一道初三二次函数题!如图,抛物线Y=-1/2X^2+BX+C与x轴交于A,B两点,与y轴交于C点,且OA = 2 ,OC = 3.(1)求抛物线的解析式;(2)作Rt△OBC的高OD,延长OD与抛物线在第一象限内交于点E,求点E的坐标;(3)在x轴上](/uploads/image/z/7087086-54-6.jpg?t=%E3%80%90%E4%B8%80%E9%81%93%E5%88%9D%E4%B8%89%E4%BA%8C%E6%AC%A1%E5%87%BD%E6%95%B0%E9%A2%98%21%E5%A6%82%E5%9B%BE%2C%E6%8A%9B%E7%89%A9%E7%BA%BFY%3D-1%2F2X%5E2%2BBX%2BC%E4%B8%8Ex%E8%BD%B4%E4%BA%A4%E4%BA%8EA%2CB%E4%B8%A4%E7%82%B9%2C%E4%B8%8Ey%E8%BD%B4%E4%BA%A4%E4%BA%8EC%E7%82%B9%2C%E4%B8%94OA+%3D+2+%2COC+%3D+3.%281%29%E6%B1%82%E6%8A%9B%E7%89%A9%E7%BA%BF%E7%9A%84%E8%A7%A3%E6%9E%90%E5%BC%8F%3B%282%29%E4%BD%9CRt%E2%96%B3OBC%E7%9A%84%E9%AB%98OD%2C%E5%BB%B6%E9%95%BFOD%E4%B8%8E%E6%8A%9B%E7%89%A9%E7%BA%BF%E5%9C%A8%E7%AC%AC%E4%B8%80%E8%B1%A1%E9%99%90%E5%86%85%E4%BA%A4%E4%BA%8E%E7%82%B9E%2C%E6%B1%82%E7%82%B9E%E7%9A%84%E5%9D%90%E6%A0%87%3B%283%29%E5%9C%A8x%E8%BD%B4%E4%B8%8A)
xTYoQ+c6U0)!>K
,*v!UZZ-V\bSԁwfx_\:>f|wzRg?O:ݛyH-朶]t/z;=2\=ڗ|~-I4>[J oW6t`UzEGX4@ Q6sg($=恅+#H_rB1aJ5\|wJPQ;qltLfZcߨQxP%eYv:O0jZ]+-ŬGdgzW&e9%.]S.zJOCL&uax"Ofi"'"v<̍q~tN&ecK|ŘGywssnEgLPbFd%(Ĩs.9ݣ