perplexus.info :: Just Math : Zeta sine

Home > Just Math

Zeta sine (Posted on 2018-10-28)

What is the maximum value of the expression below?

sin x / 1³ + sin 2x / 2³ + sin 3x / 3³ + ...

No Solution Yet Submitted by Danish Ahmed Khan

No Rating

Comments: ( Back to comment list | You must be logged in to post comments.)

re(2): Solution (spoiler)

| Comment 5 of 6 |

(In reply to re: Solution (spoiler) by Charlie)

I just realized, JayDeeKay's original had such a small value. I was thinking 1.1202 even while seeing and typing .1202. In some cases, obviously x^3 would be 1 when x is 1; so I don't understand what was being considered by JayDeeKay.

Edited on October 31, 2018, 2:09 pm

Posted by Charlie on 2018-10-31 14:07:46

Please log in:

Login:
Password:
Remember me:

Sign up! \| Forgot password

Search:

Search body:

Forums (0)
Newest Problems
Random Problem
FAQ | About This Site
Site Statistics
New Comments (0)
Unsolved Problems
Top Rated Problems
This month's top
Most Commented On

Chatterbox:


perplexus dot info