C.a.R. > Demos > Functions, Curves > Interpolation
This parabola is a function, not a conic section, here. It is computed from the interpolation points using divided differences in some hidden expressions. Move the interpolation points! When moved with the right mouse button, the points snap to grid points.
The expression of the parabola shows its parameters. These parameters are computed numerically using the dif() function and the evaluation at 0 of the parabola function.