To solve the hyperbolic equation with the vertex and focus of the ellipse as the focus and vertex respectively Urgent need process, thank you

To solve the hyperbolic equation with the vertex and focus of the ellipse as the focus and vertex respectively Urgent need process, thank you

Ellipse: a = 5, C = 3, then hyperbola C = 5, a = 3, that is, B = 4, so hyperbolic equation: x ^ 2 / 9 - y ^ 2 / 16 = 1