MathCAD is normally use to solve mathematical equation, it a program designed on by special programming, using MathCAD is as simple as you write on any paper and try to solve the question, same thing applies here, just typed the question & it will give you the answer in a graph form, it is normally suitable for those people who are generally involved in performing different mathematical model, or specially for those who are linked with the field of engineering. In short this software is for those experts who are linked with both physics & mathematics Model.