Time management is very much important in IIT JAM. The eduncle test series for IIT JAM Mathematical Statistics helped me a lot in this portion. I am very thankful to the test series I bought from eduncle.
Nilanjan Bhowmick AIR 3, CSIR NET (Earth Science)
Dhairya sharma
generalization or say curvilinear coordinate system.
physical significance of coordinate system to make our calculation super easy.....i.e. we can solve our problmes in a sophisticated manner.