the answer is 0

tell me if its right n i will post my soln...

see:

let

tanx = t²

now:

sec²x  dx = 2t dt

dx = 2t dt

      -------------------

     1 + t^4

and integral

I = t*dx

use dx frm above and proceed....

now it becomes very simple......

r u sure....mukulss\????

coz i feel this function is nt diff in that interval coz itz nt continous .

correct em if i m wrng .....