已知顶点在原点,焦点在y轴上的抛物线C截直线y=2x-1所得的弦长为210.求抛 发布时间:2017-04-30 05:38 │ 来源:www.tikuol.com 题型:解答题 问题: 已知顶点在原点,焦点在y轴上的抛物线C截直线y=2x-1所得的弦长为210.求抛物线C的方程.
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