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)
Ujjawal vishal
order is not important in partial derivatives.. if you differentiate(partially) w.r.t x first and then it by y or you do it first w.r.t y and then by x you will get same result...just solve some examples