已知椭圆C:x^2/a^2+y^2/b^2=1(a>b>0)的离心率e=1/2且椭圆经过点N(2,-3)求椭圆C的方程,求椭圆以M(-1,2)为中点的弦所在的直线方程
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![已知椭圆C:x^2/a^2+y^2/b^2=1(a>b>0)的离心率e=1/2且椭圆经过点N(2,-3)求椭圆C的方程,求椭圆以M(-1,2)为中点的弦所在的直线方程](/uploads/image/z/14443976-56-6.jpg?t=%E5%B7%B2%E7%9F%A5%E6%A4%AD%E5%9C%86C%EF%BC%9Ax%5E2%2Fa%5E2%2By%5E2%2Fb%5E2%3D1%28a%3Eb%3E0%29%E7%9A%84%E7%A6%BB%E5%BF%83%E7%8E%87e%3D1%2F2%E4%B8%94%E6%A4%AD%E5%9C%86%E7%BB%8F%E8%BF%87%E7%82%B9N%282%2C-3%29%E6%B1%82%E6%A4%AD%E5%9C%86C%E7%9A%84%E6%96%B9%E7%A8%8B%2C%E6%B1%82%E6%A4%AD%E5%9C%86%E4%BB%A5M%28-1%2C2%29%E4%B8%BA%E4%B8%AD%E7%82%B9%E7%9A%84%E5%BC%A6%E6%89%80%E5%9C%A8%E7%9A%84%E7%9B%B4%E7%BA%BF%E6%96%B9%E7%A8%8B)
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