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From Axel Hauschulte:
SophiCalc Free is an advanced yet easy to use calculator app. SophiCalc Free is free of advertising!General Features: Perform calculations with arbitrary complex mathematical expressions. Editing expressions made easy: Position the cursor without restrictions using the build-in magnification glass. Reuse previously entered expressions via calculation history. Freely mix the use of arguments in radian or degree for trigonometric or hyperbolic functions in one expression. Simply touch the result or the equal sign to perform further operations: E.g. send calculations via mail. No annoying advertisement! Efficient implementation for fast execution and small program size. Build-in mathematical functions: Basic math: - square root, n-th root - logarithms - absolute value - remainder - fractional part of a value Rounding: - round to the nearest whole number - round upwards - round downwards - round towards zero Statistics: - arithmetic average- geometric mean- harmonic mean- median - binomial coefficient (n choose k) - permutation - factorial Trigonometry functions: - sine, cosine, tangent - arc sine, arc cosine, arc tangent Hyperbolic functions: - hyperbolic sine, hyperbolic cosine, hyperbolic tangent - area hyperbolic sine, area hyperbolic cosine, area hyperbolic tangent Trigonometry auxiliary functions: - transform radian to degree - transform degree to radian Interpolation- linear interpolationBuild-in constants: Pi Euler's constant Golden ratio permittivity permeability speed of light electron-volt Avogadro constant Planck constant