TechCalc is the "Swiss Army Knife" of Scientific Calculators ... 44 Calculation Options + a Scientific Reference Section + the Periodic Table of the Elements! Perfect for all aspects of scientific and engineering calculations in school, university and throughout your career. Why not download it now and give it a try? Modes included are: ★ Basic Mode - Algebraic and Reverse Polish Notation (RPN), ★ Scientific Mode - Algebraic and Reverse Polish Notation (RPN), ★ 64-bit Programmer Mode (Hex, Oct, Bin and Dec) - Algebraic and Reverse Polish Notation (RPN), ★ Graphing, ★ Matrices, ★ Complex Numbers (cartesian, polar, using Euler's identity), ★ Quick Formulas, ★ Quick Converter, ★ Time Calculator, ★ Equation Solver, ★ Calculus (Derivatives, Definite Integrals, Taylor Series, Indefinite Integrals & Limits) ★ Financial + the Periodic Table of Elements! Features include: ★ All Trigonometric operations (radians, degrees or gradients) ★ Powers & Roots ★ Logs and Antilogs ★ Factorial, Modulus & Random Numbers functions ★ HCF, LCM, Prime factorization ★ Pol() & Rec() Functions ★ Permutations (nPr) and Combinations (nCr) ★ Statistics ★ Fractions Mode ★ A wide range of conversion categories and constants ★ 20 Memory Registers in each of the calculation modes ★ Detailed calculation history ★ Extensive Help and Reference ★ Highly customizable via the Settings The reference section includes: ★ Physical Laws ★ Names in the Metric System ★ Mathematical Tables ★ Elementary & Linear Algebra ★ Trigonometric Identities ★ Differentiation & Integration Rules ★ Statistics Formulas ★ Vector Mathematics ★ ASCII, IEEE 754, Fractional Bits, Roman Numeral & Number Base Converters ★ pH, Interpolation, Body Mass Index (BMI), Color, Percentage, Proportion & Molecular Weight Calculators ★ Sigma & Pi Notation ★ Balancing Chemical Equations ★ Statistics (Grouped Data) ★ Numerical Sequences ★ Humidity Calculations ★ Boolean Algebra Calculator ★ Empirical Formula Calculator ★ Characteristics of an RLC Circuit ★ Feet and Inches Calculator ★ Aspect Ratio Calculator ★ Barometric Formula Calculator ★ Linear Regression Analysis (Simple Linear Regression; Multiple Linear Regression) ★ Bicycle Tire Pressure Calculator Please email any questions that are not answered in the Help section. This is also an ad-supported app - upgrade to an ad-free version via: https://play.google.com/store/apps/details?id=com.roamingsquirrel.android.calculator_plus