a_n =Σ_(k=1 ) ^(n−1) ((sin((((2k−1)π)/(2n))))/(cos^2 ((((k−1)π)/(2n)))cos^2 (((kπ)/(2n))))) find lim_(n→∞) (a


Question and Answers Forum

All Questions Topic List
Arithmetic Questions
Previous in All Question Next in All Question
Previous in Arithmetic Next in Arithmetic
Question Number 98557 by M±th+et+s last updated on 14/Jun/20

$a_{n} = \underset{k = 1}{\sum^{n - 1}} \frac{s i n (\frac{(2 k - 1) π}{2 n})}{{c o s}^{2} (\frac{(k - 1) π}{2 n}) {c o s}^{2} (\frac{k π}{2 n})}$ $f i n d \underset{n \to \infty}{l i m} \frac{a_{n}}{n^{3}}$
Terms of Service
Privacy Policy
Contact: info@tinkutara.com

Question and Answers Forum