Thread: Improper Integral

My question read

integrate (0 to infinity) 1/((x+1)(x^2+1))..so i
wrote

limit as A approaches infinity int (0 to A) (1/((x+1)(x^2+1))

I tried integrating by using variables A and B so that they have a common denominator...I ve made no progress for a while now plz help

find A,B,C