Grade 12th passTrigonometry
What is the value of (1+i)5 +(1+i)5 , where i is iota?
What is the value of (1+i)5 +(1+i)5 , where i is iota?
2 Answers
Arun
Dear Adrash
(1 +i)^5 = ((1+i)^2)^2 ( 1 + i)
=( – 2i)^2 (1+i) = – 4(1 +i) = – 4 – 4i
similarly (1 – i)^5 = – 4 + 4i
hence answer will be – 8
Vikas TU
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