Assignment - 1 (On perturbation techniques): Click here
Solutions for assignment - 1 : Click here
Mathematica solution for problem II-1 : Click here
Mathematica solution for problem II-2 : Click here
Mathematica solution for problem III-1 : Click here
Mathematica solution for problem III-2 : Click here
Mathematica solution for problem IV-1 : Click here
Mathematica solution for problem IV-2 : Click here