" If "int_(0)^(oo)(dx)/((x^(2)+4)(x^(2)+9))=k pi

If int_(0)^(oo)(dx)/((x^(2)+4)(x^(2)+9))=kpi then the value of k is

int_ (0)^(oo) (x^(2) dx)/((x^(2)+a^(2)) (x^(2)+b^(2)) (x^(2) +c^(2))) = (pi)/(2 (a+b) (b+c) (c+a)), then value of int_ (0)^(oo) (dx)/((x ^(2) +4) (x^(2) +9)) is (i) (pi)/(60) (ii) (pi)/(20) (iii) (pi)/(40) (iv ) (pi)/(80)

int_(0)^(oo)(dx)/((1+x^(2))^(4))=

The value of int_(0)^(oo) (dx)/((x^(2)+4)(x^(2)+9) ) is

If int_(0)^(oo)(x^(2)dx)/((x^(2)+a^(2))(x^(2)+b^(2))(x^(2)+c^(2)))=(pi)/(2(a+b)(b+c)(c+a))" then "int_(0)^(oo)(dx)/((x^(2)+4)(x^(2)+9))=

int_(0)^(oo) (dx)/((1+x^(2))^(4))=

Given int_0^(oo) (x^(2)dx)/((x^(2)+a^(2))(x^(2)+b^(2))(x^(2)+c^(2))) = pi/(2(a+b)(b+c)(c+a)) the value of int_0^(oo) (dx)/((x^(2)+4)(x^(2)+9)) =

I=int_(0)^(oo)(x)/((x^(2)+a^(2))^(2))dx

Prove that int_(0)^(oo) (dx)/((x^(2)+a^(2))(x^(2)+b^(2)))=(pi)/(2ab(a+b))

int_(0)^(oo)e^(-x/2)dx