Calculate ${2^{n + 1}}\prod\limits_{k = 1}^n {\cos \frac{{\pi k}}{{n + 1}}} $

Asked Mar 20 '16 at 12:51

Active Mar 20 '16 at 12:59

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Calculate $${2^{n + 1}}\prod\limits_{k = 1}^n {\cos \frac{{\pi k}}{{n + 1}}} $$

It's task in theme "Eigenvectors and eigenvalues" (linear algebra book) I have no idea.

Any advice? (How to solve it with linear algebra or mathematical analysis)

edited Mar 20 '16 at 12:57

asked Mar 20 '16 at 12:51

Evgeny Semyonov

1

What do you mean by "solve it"? How do you solve a product? – Edward Evans Mar 20 '16 at 12:56
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What does solve mean here? What is the unknown? – Bernard Mar 20 '16 at 12:57
Sorry, i mean Calculate – Evgeny Semyonov Mar 20 '16 at 12:57

0 Answers0