4+p/2=5
p=2
焦点到准线的距离为p=2
抛物线y²=2px上,横坐标为4的点到焦点的距离为5,则焦点到准线的距离为?
抛物线y²=2px上,横坐标为4的点到焦点的距离为5,则焦点到准线的距离为?
其他人气:363 ℃时间:2019-10-10 08:11:43
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