einSTein - Version 12.05.10 The most easy and complet calculator in Internet. Compare it with any other you can find! Programmable! It will accept arithmetic expressions or functions: for example to compute the expression (1+a^2)*((a-1)/ (a+1) you have to insert (or paste from clipboard) the expression as it's written, insert a value for a and press 'enter'. Graph plotting of a function - Computing of integrals and derivates - Computing of a function (linear, logarithmic or exponential), that better describes a series of values - Solution of f(x) in an interval. Vectors (three dimensions) calculator (RPN)- Matrix computing (only for 32 bit version)- Solution of systems of three equations - Possibility of operating as a normal calculator (RPN):Mathematic - Trigonometric - Calendar - Financial functions - Special, unique financial function: allows the calculation of the interest rate of complete irregular cash flows Loans and amortizartion planes - Leasing - USA and European date format - Solution of triangles - Solution of equations up to the 16th grad - Complex and vectors calculations - Measure converter: hundreds of different measures - Saving capability (You can build your personal archiv)- Print capability Reverse Polnishe Notation (8 stac-registers that may be seen in a separate window) A must for every family! Absolutly necessary for students, workers, savers and debtors.