Applet JInequality is designed to solve inequalities with two variables.
Press "Add" and new inequality appears in the inequality-system panel.
After editing is completed, press "Solve" to run the solver and the solution will be displayed. If "Reset" is pressed, the inequalities will be deleted and a help message and colour legend will be displayed.
Press "Help" to display this document.

Current version supports only four types of inequalities: linear, ellipse, hyperbole and parabola. So, first You can select inequality type in combobox like this Line Ellipse Hyperbole Parabola
Each inequality has to be defined in following form:

• Linear: Ax+By=C;
• Ellipse: x²/A²+y²/B²=1;
• Hyperbole: x²/A²+y²/B²=1;
• Parabola: By-Ax²=C;

So, You can manipulate with values of coefficients A, B and C.
You can also define expression type from following above, above or equal, below and below or equal in combobox like this: < <= > >=
If button "X" is pressed, inequality will be removed from system.