计算:(根号2/(1+i))^100+ (根号2/(1-i))^1000分
问题描述:
计算:(根号2/(1+i))^100+ (根号2/(1-i))^1000分
(根号2/(1+i))^100+ (根号2/(1-i))^100
答
(1+i)^100=[(1+i)²]^50=(1+i²+2i)^50=[(2i)²]^25=-4^25=-(2²)^25=-2^50(1-i)^100=[(1-i)²]^50=(1+i²-2i)^50=[(-2i)²]^25=-4^25=-(2²)^25=-2^50(根号2/(1+i))^1...