A pity not to have much time to visit this forum. The following question need some knowledge beyond high school. It seems somewhat boring. www.ddhw.com Find polynomial expansion of (1-z) ^(-t), where |z| < 1. Both t and z are complex numbers. We have standard solution to this problem by use of Cauchy integral. But there is another way to solve it by imploying a bit of calculus.
www.ddhw.com
本贴由[QFT]最后编辑于:2006-8-4 17:41:48 |