The value of 
1
1
2
0
2
1
tan
1
x
dx
x
x
−
−




+
−


∫
 is
(A) 1
(B) 0
(C) –1
(D)
4
π
Summary
� Integration is the inverse process of differentiation In the differential calculus,
we are given a function and we have to find the derivative or differential of
this function, but in the integral calculus, we are to find a function whose
differential is given Thus, integration is a process which is the inverse of
differentiation Let 
F( )
( )
d
x
f x
dx
=