this course covers the characteristic of PARTIAL DIFFERENTIAL equation,laplace,poisson, wave heat, hyperbolic,elliptic and parabolic equations. scattering problems and solution of the hyperbolic equations with two independent variables using riemann tech(this course covers the characteristic of PARTIAL DIFFERENTIAL equation,laplace,poisson, wave heat, hyperbolic,elliptic and parabolic equations. scattering problems and solution of the hyperbolic equations with two independent variables using riemann tech)