Evaluate
in these type of problems we put the value of x=a tank
That is mean that dx=a sec2k dk
= ∫ a. sec k. a. sec2k dk
=∫ a2 sec3k dk
By upper solve questions we can find out the value of integration of sec3x,whixh is equal to
Put the value of integration of sec3x in above equation we get our finally integral which is –
Now put the value of k which is tan-1(x/a) in above equation-