ZCalc в Android Market

ZCalc (v. 4.5) Разработано Bondili Singh

With more than 100 built-in functions, special functions, and forms to enter matrix and list data, ZCalc calculates matrix inversions, LU decompositions, definite integrals, derivatives and zeros of simple functions. Switch to increasingly complex layouts, solve equations, compute statistical and list functions.
To use international versions, set the input language for onscreen keyboard to be English.