Parametrizing Complex Line Integral

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So this is an ultra basic question, but I'm rusty with parametrization techniques and wanted to make sure I was doing this correctly. Let's say I want to evaluate \int_{\gamma} z \: dz where \gamma : [a,b]\rightarrow \mathbb{C} is some path of integration. Now, I figure I can parametrize the curve and apply the definition of complex integration to arrive at the following: \gamma(t) = x(t) + iy(t) \quad \text{so} \quad \int_{\gamma} z \: dz = \int_a^b \gamma(t) \gamma(t)' \: dt = \int_a^b (x(t)+iy(t))(x'(t)+iy'(t)) \: dt and distribute from there. Again, I know this is a very basic question, and I'm pretty sure it's correct, but it's been a while so I wanted to make sure I wasn't making some silly logical error (quite possible). Thanks.
 
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So far so good. You are following the definition. You can also calculate this way

\int_\gamma f(z)dz

replacing f(z) by f(\gamma(t))
 
Shouldn't that be from t_0 to t_1?
 
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