6. Evaluate \( \oint_{C} \frac{z^{2}+1}{(z-1)^{2}(z+2i)} dz \) , where the contour C is the circle\( |z+i|=7 \) .(10%)
阿摩線上測驗
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6. Evaluate \( \oint_{C} \frac{z^{2}+1}{(z-1)^{2}(z+2i)} dz \) , where the contour C is the circle\( |z+i|=7 \) .(10%)