已知抛物线y=-2x²+4x+6.1.求它与坐标轴的交点坐标.2.求使y>0,y<0时x的取值已知抛物线y=-2x²+4x+6.1.求它与坐标轴的交点坐标.2.求使y>0,y<0时x的取值范围
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![已知抛物线y=-2x²+4x+6.1.求它与坐标轴的交点坐标.2.求使y>0,y<0时x的取值已知抛物线y=-2x²+4x+6.1.求它与坐标轴的交点坐标.2.求使y>0,y<0时x的取值范围](/uploads/image/z/3741853-13-3.jpg?t=%E5%B7%B2%E7%9F%A5%E6%8A%9B%E7%89%A9%E7%BA%BFy%3D%EF%BC%8D2x%26%23178%3B%EF%BC%8B4x%2B6.1.%E6%B1%82%E5%AE%83%E4%B8%8E%E5%9D%90%E6%A0%87%E8%BD%B4%E7%9A%84%E4%BA%A4%E7%82%B9%E5%9D%90%E6%A0%87.2.%E6%B1%82%E4%BD%BFy%EF%BC%9E0%2Cy%EF%BC%9C0%E6%97%B6x%E7%9A%84%E5%8F%96%E5%80%BC%E5%B7%B2%E7%9F%A5%E6%8A%9B%E7%89%A9%E7%BA%BFy%3D%EF%BC%8D2x%26%23178%3B%EF%BC%8B4x%2B6.1.%E6%B1%82%E5%AE%83%E4%B8%8E%E5%9D%90%E6%A0%87%E8%BD%B4%E7%9A%84%E4%BA%A4%E7%82%B9%E5%9D%90%E6%A0%87.2.%E6%B1%82%E4%BD%BFy%EF%BC%9E0%2Cy%EF%BC%9C0%E6%97%B6x%E7%9A%84%E5%8F%96%E5%80%BC%E8%8C%83%E5%9B%B4)
已知抛物线y=-2x²+4x+6.1.求它与坐标轴的交点坐标.2.求使y>0,y<0时x的取值已知抛物线y=-2x²+4x+6.1.求它与坐标轴的交点坐标.2.求使y>0,y<0时x的取值范围
已知抛物线y=-2x²+4x+6.1.求它与坐标轴的交点坐标.2.求使y>0,y<0时x的取值
已知抛物线y=-2x²+4x+6.
1.求它与坐标轴的交点坐标.
2.求使y>0,y<0时x的取值范围
已知抛物线y=-2x²+4x+6.1.求它与坐标轴的交点坐标.2.求使y>0,y<0时x的取值已知抛物线y=-2x²+4x+6.1.求它与坐标轴的交点坐标.2.求使y>0,y<0时x的取值范围
1、当y=0时,与x轴相交,-2x²+4x+6=0,交点坐标为:(3,0).
当x=0时,与y轴相交,y=6,交点坐标为:(0,6).
2、y>0:x>3或x