Q.2. Without using Cauchy's Theorem, evaluate $\int_\gamma z^n dz$, where $\gamma$ is any circle centered at the origin with positive orientation and $n \in \mathbb{Z}$. Hint: Apply appropriate parametrization.
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Then, we can parametrize $\gamma$ by $z(t) = re^{it}$, where $0 \le t \le 2\pi$. Show more…
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