It comes with an in depth User Manual and Tutorial to answer any questions you have, regarding the app and to help you further understand the world of advanced mathematics. ◉ BUILT-IN DOCUMENTS: ▸ Basic General Calculation ▸ X & Y Calculation & Intersection of Functions ▸ Calculate Local Maxima, Minima... ▸ Statistics & Regression ▸ Solve Equations & Polynomial ▸ Calculate Integral Functions ◉ CALCULATOR INCLUDED: ▸ Universal Calculator App ▸ Mathematical Display ▸ Complex Number Calculation ▸ Equations Solver ▸ Edit & Export Expression/Result ▸ History Tape View ▸ Basic Calculations (+, -, x, ÷, ^, √,…) ▸ Advanced Functions (Sin,Cos,Ln,E,…) ▸ Y-Var & Customize Functions (F1, F2, F3) ▸ Unit Converter (50 Categories, 1000+ Units) ▸ Over 40 Common Constants ▸ Fraction and Degree/Angle Calculation ▸ Numeric Integral & Derivative Calculation ▸ Hardware Keyboard Support ▸ Dual Themes(Skin) ◉ 2D GRAPH: ▸ Simultaneous Graph ▸ Smooth Zoom & Transformation ▸ Support Parametric, Polar & Sequences ▸ Intersections, Min, Max & Special Points TRACE ▸ Box Plot (STAT) ◉ STATISTIC,REGRESSION & TEST: ▸ Create/Edit Lists ▸ 1-Var, 2-Var Statistic ▸ Linear, Quadratic, Cubic Regression ▸ Logarithm, Exponential, Power,… Regression ▸ PropZ,T, SampZ,T, Chi, Interval… Test ▸ Dialog Wizard Setups ◉ MATRIX: ▸ Create/Edit Matrices ▸ Basic Matrix Functions (Det,Dim,Fill,…) ▸ Advanced Matrix Functions (Inv, Ref, RRef,…) ◉ PROGRAMING: ▸ Control Commands ▸ I/O Commands ▸ Example Source Codes Included ◉ NUMBER BASE-N MODE: ▸ 15 Different Bases ▸ Support Up to 64 Bits Integer ▸ Binary Operation (NOT, OR, XOR, 2’S,…) ◉ ADITIONAL FEATURES: ▸ Financial Calculation (TVM Solver) ▸ Geometry & Chemistry App ▸ And more will be available in further update! IT IS THE MUST HAVE CALCULATOR !!!!!!! We love your feedback, Thanks a lot ! Please contact us for questions, bugs/crash reports, conversion requirements, etc…