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)
Ruby negi
first find the first of the graph and then use Fourier series for that function, u will easily get the answer.. once try urself then I'll provide you complete solution if u r not able to.