Scientific Calculator+ is an iPhone/iPad calculator designed with simplicity, usability, and beauty in mind...Once you try Scientific Calculator+ you will think why this wasn't done from so long.After installing Scientific Calculator+ you get access to 4 different calculators:1- Handwriting calculator2- Scientific calculator3- Quadratic & Cubic equation solver4- System of linear equations solver5- Graphing calculator (you will need to upgrade to use this calculator)FEATURES:- Elegant & intuitive interface- Supports handwriting- Displays both the equation & the result at the same time- Supports many scientific functions- Solving system of linear equations 2x – y = 9 3x + 4y = –14- Solving Quadratic equation x2 + 5x + 6 = 0- Solving Cubic equation 2x3 - 4x2 - 22x + 24 = 0- Graphing equationsNote: for graphing equations you will need to upgrade to Graphing Calculator+, this will cost you extra $0.99