1 votes 1 votes The value of the contour integral $\displaystyle{}\oint_{\mid z-j \mid =2} \;\frac{1}{z^2+4} d z$ in positive sense is $\frac{j \pi}{2}$ $-\frac{\pi}{2}$ $-\frac{j \pi}{2}$ $\frac{\pi}{2}$ Others gate2006-ec + – admin asked Sep 20, 2022 • edited Feb 25, 2023 by Lakshman Bhaiya admin 46.4k points 123 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.