JEE Class main Answered
Sir pls solve the following.
Asked by rsudipto | 29 Dec, 2018, 11:47: AM
Expert Answer
Given expression : (1+i)n1 + (1+i3)n1 + (1+i5)n2 + (1+i7)n2 .......................(1)
since i = √-1 , i3 = - i , i5 = i and i7 = - i
Hence eqn.(1) becomes, (1+i)n1 + (1-i)n1 + (1+i)n2 + (1-i)n2
hence in the option list, (D) is correct answer, i.e., n1>0 , n2 >0
Answered by Thiyagarajan K | 30 Dec, 2018, 04:12: PM
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