Amazon Free App of the Day:
Math Formula Wizard – Math formulas and calculations on your Android phone or tablet. It’s free, beautiful and easy to use!
Formula Wizard is the perfect companion for anyone using mathematics in school, university, at work or for personal problems. The integrated calculator lets you calculate the area, volume and perimeter of any geometrical solid or shape. You can also use Formula Wizard to solve quadratic equations or to make use of the binomial theorem. On top of that, you can compute the distance between two points in a Cartesian coordinate system.