As an example, ABAKUS-FUNC yields the following exact results for the function f(x) = x/(x+1)^2+2.
Zeros: x = -2, x = -1/2;
Singularities: x = -1;
Extremal points: Maximum (1,9/4);
Turn points: (2,20/9).

You can easily check the symbolic results by viewing the plot of the function. Several functions can be displayed simultaneously within the graphical window. On a color device you can select different colors for the individual functions. For functions with two variables, ABAKUS-FUNC generates a 3D-like graphical representation.

Moreover ABAKUS-FUNC contains a special editor for mathematical formulas. So you can enter even complex expressions very fast.

The free trial version of ABAKUS-FUNC allows you to test all functions for a certain input.