(1+2i)/(1-i)^2 化简(1+2i)/(1-i)^2= (1+2i)/(1-2i-1)= (1+2i)/(-2i)= (-1/2)(1+2i)/i= (-1/2)(-i+2)= -1+(1/2)i(1+2i)/(1-2i-1)为什么是(1-2i-1)而不是(1-2i+i^2)

来源:学生作业帮助网 编辑:作业帮 时间:2024/05/06 05:25:09

(1+2i)/(1-i)^2 化简(1+2i)/(1-i)^2= (1+2i)/(1-2i-1)= (1+2i)/(-2i)= (-1/2)(1+2i)/i= (-1/2)(-i+2)= -1+(1/2)i(1+2i)/(1-2i-1)为什么是(1-2i-1)而不是(1-2i+i^2)
(1+2i)/(1-i)^2 化简
(1+2i)/(1-i)^2= (1+2i)/(1-2i-1)= (1+2i)/(-2i)= (-1/2)(1+2i)/i= (-1/2)(-i+2)= -1+(1/2)i
(1+2i)/(1-2i-1)为什么是(1-2i-1)而不是(1-2i+i^2)

(1+2i)/(1-i)^2 化简(1+2i)/(1-i)^2= (1+2i)/(1-2i-1)= (1+2i)/(-2i)= (-1/2)(1+2i)/i= (-1/2)(-i+2)= -1+(1/2)i(1+2i)/(1-2i-1)为什么是(1-2i-1)而不是(1-2i+i^2)
因为i²=-1
所以1-2i+i^2就是1-2i-1