I dont understand at all.
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Originally Posted by davismj I dont understand at all. the circle centered at a with radius r has the equation $\displaystyle z(t) = a + re^{it}$ hence $\displaystyle ~dz = ire^{it} ~dt$ substitute it to the cauchy integral formula
Originally Posted by dedust the circle centered at a with radius r has the equation $\displaystyle z(t) = a + re^{it}$ hence $\displaystyle ~dz = ire^{it} ~dt$ substitute it to the cauchy integral formula Wow, you've helped me so much on this one. I understand Complex Analysis so much more now.
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