Let $C$ be the unit square with vertices $0, 1, 1+i, i$ with the counterclockwise orientation.
a) Parameterize the contour $C$. For this, I parameterized the 4 line's which make up this unit square. With $C_1: f_1(t)=t , C_2: f_2(t)=1+it , C_3: f_3(t)=1-t+i , C_4: f_4(t)=i-it$ , where $t$ is from $[0,1]$
b) Using your parameterization of $C$, compute the value of the contour integral: (sorry not sure how to insert math type)
$\displaystyle\oint_C \bar{z} dz$, (contour integral over $C$ of $\bar{z} dz$) For this part I integrated $C_1, C_2, C_3, C_4$ separately, all going from $[0,1]$ and added them together. I got a final answer of $2i$, not sure if I made a mistake anywhere during the integration, but can anyone confirm this answer?