this is really a simple one...... just wanted to check my answer. So pls co-operate [1]
Using transformations or otherwise , find correct four places of decimals the value \prod_{1}^{5}{}(zi+1)/(2zi-1)
where Zi are the roots of z5=1.
I got 0.0645.........so pls check . I dont have solution for this [7]
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1 Answers
1let w=(zi+1)/(2zi-1)
z=(w+1)/(2w-1)
((w+1)/(2w-1))5=1
(2w-1)5-(w+1)5=0
\prod_{1}^{5}{}(zi+1)/(2zi-1)=2/31=0.0645