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)
Abhishek singh
There are many ways of doing this question. you can do it by Beta function or by changing the coordinates to cylindrical coordinates. but I have attached the simplest way to solve this question at JAM level. it is based on substitution method. Best regards.
how did u integrated the last part....sin^6xcos^6x