Functions of several variables and theirs applications, Vector algebra in three dimensions, Polar coordinates, Calculus of real – valued functions of two variables, Differentiation and integration of real – valued and vector – valued functions of multiple real variables, Introduction to line integrals, Lines ,planes and surfaces in three-dimensional space, Calculus of real – valued functions in three-dimensional space, Principal theory for applications such as Green’s theorem, divergence theorem, Gauss theorem, Stokes theorem, etc.