已知曲线C的方程为(4-k)x^2+ky^2=k(4-k)(1)若曲线C是椭圆,求焦点坐标.(2)若曲线C是双曲线,且其渐近线的倾斜角为30°,求此双曲线的标准方程.速求速求大神
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![已知曲线C的方程为(4-k)x^2+ky^2=k(4-k)(1)若曲线C是椭圆,求焦点坐标.(2)若曲线C是双曲线,且其渐近线的倾斜角为30°,求此双曲线的标准方程.速求速求大神](/uploads/image/z/2000631-39-1.jpg?t=%E5%B7%B2%E7%9F%A5%E6%9B%B2%E7%BA%BFC%E7%9A%84%E6%96%B9%E7%A8%8B%E4%B8%BA%EF%BC%884-k%EF%BC%89x%5E2%2Bky%5E2%3Dk%EF%BC%884-k%EF%BC%89%EF%BC%881%EF%BC%89%E8%8B%A5%E6%9B%B2%E7%BA%BFC%E6%98%AF%E6%A4%AD%E5%9C%86%2C%E6%B1%82%E7%84%A6%E7%82%B9%E5%9D%90%E6%A0%87.%EF%BC%882%EF%BC%89%E8%8B%A5%E6%9B%B2%E7%BA%BFC%E6%98%AF%E5%8F%8C%E6%9B%B2%E7%BA%BF%2C%E4%B8%94%E5%85%B6%E6%B8%90%E8%BF%91%E7%BA%BF%E7%9A%84%E5%80%BE%E6%96%9C%E8%A7%92%E4%B8%BA30%C2%B0%2C%E6%B1%82%E6%AD%A4%E5%8F%8C%E6%9B%B2%E7%BA%BF%E7%9A%84%E6%A0%87%E5%87%86%E6%96%B9%E7%A8%8B.%E9%80%9F%E6%B1%82%E9%80%9F%E6%B1%82%E5%A4%A7%E7%A5%9E)
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