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mfgoode 2007-05-06 16:58

Typo error!
 
[QUOTE=jinydu;105369]Sure it can. For instance, take [tex]\frac{\sqrt{2}}{\sqrt{2}}[/tex].

Actually, [tex]\frac{\zeta(26)}{\pi^2}[/tex] is a rational multiple of [tex]\pi^{24}[/tex] and is hence irrational, while [tex]\zeta(3)[/tex] itself is irrational.

After computing the first 10 terms of the continued fraction expansion for [tex]\frac{\zeta(26)}{\pi^2}[/tex] and combining it into a simple fraction, I get:

[tex]\frac{158157}{1560947}[/tex][/QUOTE]

:smile:

[QUOTE=jinydu]Sure it can. For instance, take [tex]\frac{\sqrt{2}}{\sqrt{2}}[/tex]. [/QUOTE]

Can you give another example not coming to 1 but any other integer?

I'm extremely sorry jinydu. That was a typographical error in my post.

I meant [tex]\frac{\zeta(26}{\pi^26}[\tex] i.e. Zeta 26/pi^26 in case the tex doesnt show up

Now what is the fraction?

Mally :coffee:

P.S. BTW what went wrong with my tex language?

jinydu 2007-05-06 18:07

[QUOTE=mfgoode;105393]
Can you give another example not coming to 1 but any other integer?
[/quote]

How about [tex]\frac{n\sqrt{2}}{\sqrt{2}}[/tex] for any integer [tex]n[/tex].

[QUOTE=mfgoode;105393]
I meant [tex]\frac{\zeta(26}{\pi^26}[\tex] i.e. Zeta 26/pi^26 in case the tex doesnt show up

Now what is the fraction?
[/quote]

[tex]\frac{1315862}{11094481976030578125}[/tex]

[QUOTE=mfgoode;105393]P.S. BTW what went wrong with my tex language?[/QUOTE]

Use /tex not \tex

mfgoode 2007-05-08 12:34

Fraction
 
[QUOTE=jinydu;105395]How about [tex]\frac{n\sqrt{2}}{\sqrt{2}}[/tex] for any integer [tex]n[/tex].



[tex]\frac{1315862}{11094481976030578125}[/tex]



Use /tex not \tex[/QUOTE]

:smile: Your fraction is correct.
Thanks Jinydu.

Mally :coffee:

fivemack 2007-05-09 11:57

There's a useful trick for special-values-of-functions:

go to [url]http://integrals.wolfram.com/index.jsp[/url]

and ask to integrate Zeta[26]

and the output comes out as 1315862 pi^26 x / 11094481976030578125

I don't think this is the intended use of integrals.wolfram.com, but I don't know a full-fat Web Mathematica.

mfgoode 2007-05-09 16:10

Summation!
 
[QUOTE=fivemack;105602]There's a useful trick for special-values-of-functions:

go to [url]http://integrals.wolfram.com/index.jsp[/url]

and ask to integrate Zeta[26]

and the output comes out as 1315862 pi^26 x / 11094481976030578125

I don't think this is the intended use of integrals.wolfram.com, but I don't know a full-fat Web Mathematica.[/QUOTE]

:rolleyes:

Thank you fivemack for the 'useful trick' for summing up of series. I have noted it down

At first glance I wondered how can one integrate a series without a variable, so I tried the URL you gave disbelievingly. Seeing an 'x' in the answer I caught on as strictly speaking it is actually the summing up of Zeta[26]x^0 hence on integration one must get x. This is a fine example for summation of series.

Well we all live and learn which is an unending process!.

The next logical step is to plug in Zeta (3) and lets see what comes up.
I haven't done it right now and will let you know what comes up.

Great Guns, fivemack!

Mally :coffee:

P.S. I got xZeta[3] Not even a decimal answer which jinydu got from his site.

jinydu 2007-05-10 00:56

[QUOTE=fivemack;105602]There's a useful trick for special-values-of-functions:

go to [url]http://integrals.wolfram.com/index.jsp[/url]

and ask to integrate Zeta[26]

and the output comes out as 1315862 pi^26 x / 11094481976030578125

I don't think this is the intended use of integrals.wolfram.com, but I don't know a full-fat Web Mathematica.[/QUOTE]

That shouldn't be too much of a surprise. The integral of a constant is the variable times that constant.


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