A free program for Android, by Engineering Wale Baba.

Engineering Mathematics – 3: The app is a complete free handbook of Engineering Mathematics. The topics covered in this app include: Analytical Functions, Hurwitz Theorem, Complex Arithmetic, Topology of the Complex Plane, The Exponential Function, Polar Form of a Complex Number, Roots of Complex Numbers, Cauchy Integral Theorem, Cauchy Integral Formula for Derivatives, Fundamental Theorem of Algebra, Sequences of Holomorphic Functions and their Derivatives, Isolated Singularities, Laurent Series, Annulus of Convergence, Calculus of Residues, Evaluation of Definite Integrals, Complexification of the Integrand, Cauchy Integral Theorem, Cauchy Integral Formula for Derivatives, Taylor Series, Evaluation of Real Integrals by Contour Integration, Concept of Moment, Moment Generating Function, Skewness, Kurtosis, Random Variable, Curve Fitting, Polynomials Least-Squares Fitting, Fitting an Exponential Curve, Binomial Distribution, Poisson Distribution, Normal Distribution, Sampling Theory, Test for the Difference of Two Sample Means, Chi-Square Test, Analysis of Variance, Techniques of One-way Analysis of Variance, Interpolation, Difference Operators, Newton’s Crout Method, Gauss-Seidel Method, Problems on Solving Linear System, Numerical Differentiation, Newtons Cotes Quadrature Formula, Simpsons 1/3 Rule, Simpson 3/8 Rule, Euler’s Method, Runge-Kutta Method, Problem on Numerical Technique – II, All topics are not listed because of character limitations.