0 votes 0 votes Let $D$ be the triangular region in the $xy$-plane with vertices at $(0,0), (0,1)$ and $(1, 1).$ Then the value of $$ \iint_{D} \frac{2}{1 + x^{2}} dx dy$$ is $\frac{\pi}{2}$ $\frac{\pi}{2} – \ln 2$ $ 2 \ln 2$ $\ln 2$ Others isi2021-mma + – admin asked Jul 23, 2022 • edited Aug 7, 2022 by Lakshman Bhaiya admin 379 views answer comment Share Follow See all 0 reply Please log in or register to add a comment.