Find the equations of the tangent and normal to the hyperbola at the point (x0, y0).
It is given that the equations of the tangent and normal to the hyperbola , then,
On differentiating it with respect to x, we get,
Therefore, the slope of the tangent at (x0, y0) is
Then, the equation of the tangent at (x0, y0) is given by:
y - y0 =
Then, slope of normal at (x0, y0)
=
Therefore, the equation of the normal at (x0, y0) is
y - y0 = (x - x0)
Therefore, the equation of the normal at (x0, y0) is.