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)
Sonu saini
Answer
thanks for replying, but it's mentioned in SK gupta that its discontinous at those points.. I got the same result as you
this is where I found it
reason for non derivative is that left hand derivative not equal to right hand derivative
but function is continuous at every point
have you any doubt right now ??