SimpleCalcPython How to use: sudo apt-get install python-tk python-pip sudo pip install scipy sympy mpmath numpy matplotlib python calc.py Features: addition subtraction multiplication division sine cosine tangent cotangent drawing graphic limit (if x -> 0) limit (if x -> 1) limit (if x -> ∞) limit (if x -> any number) undefinite integral definite integral derival simplifying expressions geometry calculations electricity calculations Python 2.7 needed only.