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[(1+i)^8-1]/i*(1+i)^8=50/13求i
题目详情
[(1+i)^8-1]/i*(1+i)^8=50/13 求i
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答案和解析
(t^8-1)/(t-1)*t^8=50/13.
(t^16-t^8)/(t-1)=50/13.
设k=50/13,
tk-k-t^16+t^8=0.
(t^16-t^8)/(t-1)=50/13.
设k=50/13,
tk-k-t^16+t^8=0.
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