The value of the integral $\int\limits_c \frac{cos (2 \pi z)}{(2z - 1)(z - 3)}dz$(where C is a closed curve given by |z| = 1) is
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The value of the integral $\int\limits_c \frac{cos (2 \pi z)}{(2z - 1)(z - 3)}dz$(where C is a closed curve given by |z| = 1) is