int_(0)^(1)(tan^(-1)x)/(1+x^(2))dx

int_(0)^(1)(tan^(-1)x)^2/(1+x^(2))dx

Evaluate the following : int_(0)^(1)tan^(-1)((2x)/(1-x^(2)))dx

2) int_(0)^(1)tan^(-1)(1-x+x^(2))dx

Evaluate: int_(0)^(1)(x tan^(-1)x)/((1+x^(2))^(3/2))dx

Evaluate: int_(0)^1tan^(-1)x/(1+x^2) dx

int_(0)^(1)tan^(-1)(1-x+x^(2))dx=

int_(0)^(1)Tan^(-1)((2x)/(1-x^(2)))dx=

int_(0)^(1)Tan^(-1)((2x)/(1-x^(2)))dx=

If 2int_(0)^(1)tan^(-1)xdx=int_(0)^(1)cot^(-1)(1-x+x^(2))dx then int_(0)^(1)tan^(-1)(1-x-x^(2))dx is equal to