DeadLine is a powerful and precise tool that will help you make any kind of mathematical operation you need. It's perfect for engineer students. It uses graphs and resolves the most complex numerical equations. Its interface is organized and intuitive.
All of its features are algebraic, trigonometric, parametric, exponential supported. It provides not only the graph of the function but also a list with the real roots of the equations.
In addition to that you can save the results in a text document to include them in your school projects, as easy as copy and paste.
The best of all? It's totally free! Try it.