

 A computer algebra system (CAS) is a software program that can perform symbolic computations, such as expansion, factorization and other operations of polynomials, differentiation and integration of functions. Such facilities are usually integrated with other utilities such as graphing, data handling and word processing tools to provide comprehensive packages for professional uses as well as teaching and learning. CAS can be run in common computers as well as some handheld platforms. In particular, calculators equipped with CAS are posing challenges to our assumption of basic algebraic skills, similar to the impact of scientific calculators on the notion of essential computational skills.

