Evaluator and Grapher

Features Evaluator and Grapher

This completely free app with no ads has an intuitive interfacereminiscent of graphing calculators.
It draws curves in four modes:Cartesian Mode, showing the graphs of functions f(x) you specify, PolarMode, showing a circular polar grid and graphs of polar curves r(theta),Implicit mode for graphing equations in x and y, and Parametric Mode forcurves of the form (x(t), y(t)).
Easy-to-specify graph settings forviewing important parts of graphs with the same "auto fit" feature youfind in graphing calculators, so you need specify only the domain xMin,xMax (if you like) to see a part of a curve you are interested in.Zooming in for a closeup of any part of the plane to see small detailsclearly is easy with an intuitive and easy-to-control "zoom box." Inaddition to the "trace" feature you may be used to from graphingcalculators, there is also a Table of values feature that allows to toevaluate all the functions in your list for Cartesian and Polar mode atwhatever values of the independent variable you specify.
The "Points andCurve Fit" window can be used to add plotted sets of points to yourgraph and also find a best-fit curve of any type you specify to model adata set, also showing you r-squared and p-values for the fit.