设椭圆C1的离心率为5/13,焦点在x轴上且长轴长为26,若曲线C2上的点到椭圆C1的两个焦点的距离的差的绝对值A x^2/4^2-y^2/3^2=1 B x^2/13^2-y^2/5^2=1 C x^2/3^2-y^2/4^2=1 D x^2/13^2-y^2/12
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![设椭圆C1的离心率为5/13,焦点在x轴上且长轴长为26,若曲线C2上的点到椭圆C1的两个焦点的距离的差的绝对值A x^2/4^2-y^2/3^2=1 B x^2/13^2-y^2/5^2=1 C x^2/3^2-y^2/4^2=1 D x^2/13^2-y^2/12](/uploads/image/z/2490636-12-6.jpg?t=%E8%AE%BE%E6%A4%AD%E5%9C%86C1%E7%9A%84%E7%A6%BB%E5%BF%83%E7%8E%87%E4%B8%BA5%2F13%2C%E7%84%A6%E7%82%B9%E5%9C%A8x%E8%BD%B4%E4%B8%8A%E4%B8%94%E9%95%BF%E8%BD%B4%E9%95%BF%E4%B8%BA26%2C%E8%8B%A5%E6%9B%B2%E7%BA%BFC2%E4%B8%8A%E7%9A%84%E7%82%B9%E5%88%B0%E6%A4%AD%E5%9C%86C1%E7%9A%84%E4%B8%A4%E4%B8%AA%E7%84%A6%E7%82%B9%E7%9A%84%E8%B7%9D%E7%A6%BB%E7%9A%84%E5%B7%AE%E7%9A%84%E7%BB%9D%E5%AF%B9%E5%80%BCA++x%5E2%2F4%5E2-y%5E2%2F3%5E2%3D1++++++++++++B++x%5E2%2F13%5E2-y%5E2%2F5%5E2%3D1++++++++++C++x%5E2%2F3%5E2-y%5E2%2F4%5E2%3D1++++++++++++D+x%5E2%2F13%5E2-y%5E2%2F12)
设椭圆C1的离心率为5/13,焦点在x轴上且长轴长为26,若曲线C2上的点到椭圆C1的两个焦点的距离的差的绝对值A x^2/4^2-y^2/3^2=1 B x^2/13^2-y^2/5^2=1 C x^2/3^2-y^2/4^2=1 D x^2/13^2-y^2/12
设椭圆C1的离心率为5/13,焦点在x轴上且长轴长为26,若曲线C2上的点到椭圆C1的两个焦点的距离的差的绝对值
A x^2/4^2-y^2/3^2=1 B x^2/13^2-y^2/5^2=1
C x^2/3^2-y^2/4^2=1 D x^2/13^2-y^2/12^2=1
谢谢各位
设椭圆C1的离心率为5/13,焦点在x轴上且长轴长为26,若曲线C2上的点到椭圆C1的两个焦点的距离的差的绝对值等于8,则曲线C2的标准方程为?
A x^2/4^2-y^2/3^2=1 B x^2/13^2-y^2/5^2=1
C x^2/3^2-y^2/4^2=1 D x^2/13^2-y^2/12^2=1
设椭圆C1的离心率为5/13,焦点在x轴上且长轴长为26,若曲线C2上的点到椭圆C1的两个焦点的距离的差的绝对值A x^2/4^2-y^2/3^2=1 B x^2/13^2-y^2/5^2=1 C x^2/3^2-y^2/4^2=1 D x^2/13^2-y^2/12
对于C1,离心率=c/a=5/13,2a=26,a=13,c=5.
对于C2,2a=8,c=5,b^2=c^2-a^2=9,选A
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