![](https://2.bp.blogspot.com/-QLSXQp_qTNA/Tnm4MQyNgWI/AAAAAAAADMg/ONid1iasxZw/s400/nnft.jpg)
Touch-optimized graphing calculator. Input expressions in the form of functions (e.g. 'a=sin(x)'), or plain expressions (e.g. '5!+7/sin(1+2))'). Easily access previous expressions in a list, and edit declared functions. Features include: -Trigonometric (also hyperbolic) functions and their inverse functions. Rad or Deg mode. - Square root, and arbitrary root through the power operator - logarithm; base 10 and natural - plus, ...