How to solve this 4 nonlinear equations in SMath?
I have solved it in Mathcad and copied the solution in SMath.
(Problem - parabola thru 4 points)

Parabola-4-points.sm (17.55 KiB) downloaded 888 time(s).

Hi Valery. This could be a way.

Parabola-4-points.sm (13.99 KiB) downloaded 909 time(s).

Best regards.
Alvaro.