Physics and Math Assistant

Physics and Math Assistant is an iOS app that allows you to define any equation or mathematical expression. Any mathematical expression can be input and evaluated.
The application comes with pre-built templates, but the user can create new templates.
The function defined by the mathematical expression can also be graphed. The main function can be graphed, or it's derivative, or it's integral. In addition, parametric equations are supported, eg: x = f(t), y=g(t).
You can also calculate the roots of a quadratic equation or numerically find the roots of any equation.