The value of `int_(1)^(2) (dx)/(x(1+x^(4))` is

The value of int_(1)^(3)(dx)/(x(1+x^(2))) is

The value of int_(1)^(3)(dx)/(x(1+x^(2))) is

The value of int_(0)^(oo)(dx)/(1+x^(4)) is (a) same as that of int_(0)^(oo)(x^(2)+1dx)/(1+x) (b) (pi)/(2sqrt(2))( c) same as that of int_(0)^(oo)(x^(2)+1dx)/(1+x^(4))(d)(pi)/(sqrt(2))

The value of int_(-1)^(2)(|x|)/(x) dx is

The value of int_(1)^(4)(dx)/(xsqrt(x)) is-

The value of int_(1)^(2)(x+1)/(x^(3))dx is-

The value of int_(0)^(1)(x^(2))/(1+x^(2))dx is

The value of int_(0)^(1)(x^(2))/(1+x^(2))dx is

The value of int_(1)^(4){x}^([x])dx

The value of int_(-1)^(2) (|x|)/(x) dx is :