A calculator to find the points of intersection of a hyperbola and a line.
(x - h)2 / a2 - (y - k)2 / b2 = 1
The equation of the the hyperbola with horizontal axis is of the form
and the equation of the line is of the slope intercept form
y = m x + B
If y = m x + B is substituted into (x - h)2 / a2 - (y - k)2 / b2 = 1, we end up with a quadratic equation given by:
(x - h)2 / a2 - (m x + B - k)2 / b2 = 1 which may be rearranged as a quadratic equation given by
(b2 - a2 m2) x2 + (-2 h b2 - 2 m a2 B + 2 m a2 k) x + (b2 h2 - a2 k2 - a2 B2 + 2 a2 B k - a2 b2) = 0
To find the points of intersection, this calculator solves the above equation to find the x coordinates and then uses equation y = m x + B to find the y coordinates.
How to use the calculator
1 - Enter the coordinates (h , k) of the center of the hyperbola and the constant a and b then enter the slope m of the line and its y intercept B; then press "enter". The x and y coordinates of the two points of intersection P1 and P2 are displayed.