`int_0^(1)1/(x^2+2x+1)dx=?`

int_0^1(x^2-2)/(x^2+1)dx=?

int_0^1(x^2)/(1+x^2)dx=?

int_0^1(1)/(2x-3) dx .

Evaluate the following definite integral: int_(0)^(1)(1)/(2x^(2)+x+1)dx

int_0^1 tan^1x/(1+x^2)dx

If int_(0)^(1)f(x)dx=1, int_(0)^(1)x f(x)dx=a and int_(0)^(1)x^(2)f(x)dx=a^(2) , then : int_(0)^(1)(a-x)^(2)f(x)dx=

int_(0)^(1) (1)/(x^(2) +2x+3)dx

int_0^1(dx)/(1-x^2)\

int_0^1 (x+x^2)dx