1、已知椭圆x^2/a^2+y^2/b^2=1(a>b>0)的右焦点为F,过F作y轴的平行线交椭圆于M、N两点,若绝对值MN=3,且椭圆离心率是方程2x^2-5x+2=0的根,求椭圆的方程。2、已知点A是椭圆x^2/36+y^2/20=1长轴的左端
来源:学生作业帮助网 编辑:作业帮 时间:2024/07/07 02:10:20
![1、已知椭圆x^2/a^2+y^2/b^2=1(a>b>0)的右焦点为F,过F作y轴的平行线交椭圆于M、N两点,若绝对值MN=3,且椭圆离心率是方程2x^2-5x+2=0的根,求椭圆的方程。2、已知点A是椭圆x^2/36+y^2/20=1长轴的左端](/uploads/image/z/3693476-20-6.jpg?t=1%E3%80%81%E5%B7%B2%E7%9F%A5%E6%A4%AD%E5%9C%86x%5E2%2Fa%5E2%2By%5E2%2Fb%5E2%3D1%28a%3Eb%3E0%29%E7%9A%84%E5%8F%B3%E7%84%A6%E7%82%B9%E4%B8%BAF%2C%E8%BF%87F%E4%BD%9Cy%E8%BD%B4%E7%9A%84%E5%B9%B3%E8%A1%8C%E7%BA%BF%E4%BA%A4%E6%A4%AD%E5%9C%86%E4%BA%8EM%E3%80%81N%E4%B8%A4%E7%82%B9%EF%BC%8C%E8%8B%A5%E7%BB%9D%E5%AF%B9%E5%80%BCMN%3D3%EF%BC%8C%E4%B8%94%E6%A4%AD%E5%9C%86%E7%A6%BB%E5%BF%83%E7%8E%87%E6%98%AF%E6%96%B9%E7%A8%8B2x%5E2-5x%2B2%3D0%E7%9A%84%E6%A0%B9%EF%BC%8C%E6%B1%82%E6%A4%AD%E5%9C%86%E7%9A%84%E6%96%B9%E7%A8%8B%E3%80%822%E3%80%81%E5%B7%B2%E7%9F%A5%E7%82%B9A%E6%98%AF%E6%A4%AD%E5%9C%86x%5E2%EF%BC%8F36%2By%5E2%EF%BC%8F20%3D1%E9%95%BF%E8%BD%B4%E7%9A%84%E5%B7%A6%E7%AB%AF)
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