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)
Anonymous User Best Answer
at x=1/pi,1/2 pi,1/3pi...... f(x) = 0 so f is not one one