Eigenmath computer algebra system The lightweight and powerful CAS now is ported to Android. Perhaps you know it from the others versions for: windows, mac, ppc and nds. The system was designed for the manipulation of symbolic algebraic expressionsand is powerful like a scientific calculator. Some features: Simplification to the smallest possible expression. Solution of linear equations Programmable. Differentiation. Indefinite and definite integration, including multidimensional integrals. Matrix operations including products, inverses, etc. Opcional and for a better input method install the math keyboard, its free: https://play.google.com/store/search?q=com.eigenmath.android.mathkeyboard See the documentation included.