Find the equation of the standard rectangular hyperbola.
Find the equation of the standard rectangular hyperbola whose center is (-1/2 , -1/2) and which passes through the point (1, 1/4).
Find the equation of the tangent and normal at a point to rectangular Hyperbola.
Find the equation of the tangent and normal at (-2,1/4 ) to the rectangular hyperbola
2xy - 2x - 8y - 1 = 0