Complex Analysis. How to use cauchy intergral

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Given the following integral of gamma on the path $[0,2]$ and $[-2,2]$ we have the integral $$ \int_\gamma \frac{z} {(z^2-1)(z-3)}dz$$

I set it up like

$$ \int_\gamma \frac{\frac{z}{(z+1)(z-3)}}{z-1}=2\pi i $$

and i get that =

$$ \frac{-\pi i}{2} $$

and then i did the following for $[-2,2]$ but i dont believe they are set up correctly and was wondering if i can have some guidance or the error pointed out

$$ \int_\gamma \frac{\frac{z}{(z^2-1)}}{z-3}=2\pi i $$

then after everything i get its = 0 or pi i/4

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If I understand your notation, by $[-2,2]$ you mean the circle of radius $2$ centered at $-2$. But the integrand's only pole is then at $z=-1$.

So you get $\oint_Cf(z)/(z+1)$, where $f(z)=z/((z-1)(z-3))$. So the integral is equal to $2\pi if(-1)=2\pi i(-1/8)=-\pi i/4$.