its simple just go thru the derivations and after that try to do it urself at least 2 times this will help.u must keep abook with lots theory part along with derivations i will recommend PRADEEPS physics book
derivation in physics can be learnt by understanding it conceptually and then writing it .so that u will learn it firmly.........by doin practice derivation can be leant eaisly
its simple just go thru the derivations and after that try to do it urself at least 2 times this will help.u must keep abook with lots theory part along with derivations i will recommend PRADEEPS physics book