Used Grafici 2D for Windows?
This program is partially in French.
Developer’s Description
By GABSOFT
Grafici 2D is an application that allows to graph any kind of function in one variable f(x) or in parametric form y(b), x(b). You can also plot more function in one graph and calculate the functions f(x) for a desired value. Moreover it's possible to plot the graph of the derivative of a function, display the relative max and min, the intersections with the axes and makes the zoom of a selected part of the graph.
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