Integrate : $\int \limits_0^{\infty} \large\frac{1}{(x^2+g^2)^7}dx$

Question

(a) m,n $\in$ even $k = \large\frac{\pi}{2}$

(b) m,n $\in$ even $k =2$

(c) m,n $\in$ even $k = 1$

(d) m,n $\in$ odd $k =\pi$