Discussion about math, puzzles, games and fun.   Useful symbols: ÷ × ½ √ ∞ ≠ ≤ ≥ ≈ ⇒ ± ∈ Δ θ ∴ ∑ ∫ • π ƒ -¹ ² ³ °

You are not logged in.

#26 2012-07-24 08:22:03

bobbym

Online

Re: Evaluate this integral

Of course not. Do you honestly think they even read those? I have emailed them many times with no affect.

Ever heard of Bondarenko?

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

#27 2012-07-24 08:57:49

anonimnystefy
Real Member

Offline

Re: Evaluate this integral

The tennis player?

The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

#28 2012-07-24 09:23:38

bobbym

Online

Re: Evaluate this integral

Hohohohohohoohhoosahsf! That is good one.

No the mathematician. He has a tremendous forehand.

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

#29 2012-07-24 09:32:23

anonimnystefy
Real Member

Offline

Re: Evaluate this integral

Then no.

The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

#30 2012-07-24 10:20:47

bobbym

Online

Re: Evaluate this integral

Hmmmm. He is the fly in the ointment so to speak.

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

#31 2012-07-24 10:24:28

anonimnystefy
Real Member

Offline

Re: Evaluate this integral

Why is that?

The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

#32 2012-07-24 10:29:43

bobbym

Online

Re: Evaluate this integral

You have heard of the wave-particle duality of light? The Tarski paradox, David Deutsch, Doron?

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

#33 2012-07-24 10:44:17

anonimnystefy
Real Member

Offline

Re: Evaluate this integral

All four I think.

The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

#34 2012-07-24 10:50:38

bobbym

Online

Re: Evaluate this integral

Well, then there it is.

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

#35 2012-07-24 11:47:18

anonimnystefy
Real Member

Offline

Re: Evaluate this integral

I do not get it.

The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

#36 2012-07-24 12:12:17

bobbym

Online

Re: Evaluate this integral

He is to packages what they are to there fields.

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

#37 2012-07-24 12:21:58

anonimnystefy
Real Member

Offline

Re: Evaluate this integral

Assuming Doron refers to Doron Zeilberger, wouldn't that be good?

The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

#38 2012-07-24 12:59:18

bobbym

Online

Re: Evaluate this integral

He is hated by the math community. Ridiculed and denied tenure by lesser mathematicians.

Each one is stating there are skeletons in the closet. When people ask about them they are ridiculed.

Bondarenko who I got to know on another forum has been compiling a list of errors that packages make. It is miles long. It has caused him to be ridiculed and barred from forums.

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

#39 2012-07-24 19:20:33

anonimnystefy
Real Member

Offline

Re: Evaluate this integral

The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

#40 2012-07-24 20:46:26

bobbym

Online

Re: Evaluate this integral

I think it means that Alpha is the bad guy.

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

#41 2012-07-24 21:12:40

anonimnystefy
Real Member

Offline

Re: Evaluate this integral

The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

#42 2012-07-24 23:48:55

noelevans
Full Member

Offline

Re: Evaluate this integral

-(1/2)*(x^4+1)^(3/2)/x^2+(1/2)*x^2*sqrt(x^4+1)+(1/2)*arcsinh(x^2)

This is maple 11's answer to the integral of [(x^4 + 1)^(1/2)]/x^3 (after a little simplification of the
integrand).

Looks like a combo of (x^4 + 1)'s 3/2 power divided by x^2, 1/2 power times x^2 and an arcsinh(x^2).  So it is probably amenable to various substitution techniques but probably several of them.  Could be quite tricky!

Writing "pretty" math (two dimensional) is easier to read and grasp than LaTex (one dimensional).
LaTex is like painting on many strips of paper and then stacking them to see what picture they make.

#43 2012-07-24 23:54:52

bobbym

Online

Re: Evaluate this integral

Hi;

I think he is a combination of all three.

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

#44 2012-07-25 10:52:21

noelevans
Full Member

Offline

Re: Evaluate this integral

Who is M?  Isn't that James Bond's boss?  Seriously, is M for Maple or for Maxima or for Mathematica or what?

Writing "pretty" math (two dimensional) is easier to read and grasp than LaTex (one dimensional).
LaTex is like painting on many strips of paper and then stacking them to see what picture they make.

#45 2012-07-25 11:00:35

anonimnystefy
Real Member

Offline

Re: Evaluate this integral

M here stands for Mathematica.

The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

#46 2012-07-25 14:15:42

Fruityloop
Full Member

Offline

Re: Evaluate this integral

I enjoyed looking at your answer Bobbym, but I don't understand how you got

from

I'm not certain if this answer is correct, but it's the same answer from Mathematica.

Last edited by Fruityloop (2012-07-26 16:46:54)

The eclipses from Algol (an eclipsing binary star) come further apart in time when the Earth is moving away from Algol and closer together in time when the Earth is moving towards Algol, thereby proving that the speed of light is variable and that Einstein's Special Theory of Relativity is wrong.

#47 2012-07-25 15:18:46

bobbym

Online

Re: Evaluate this integral

Hi Fruityloop;

That is because there is supposed to be a du in the numerator. Fixed the original post. Tried something new with the latexing and it just did not work.

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

#48 2012-07-25 22:46:59

anonimnystefy
Real Member

Offline

Re: Evaluate this integral

What'd you try?

The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

#49 2012-07-25 22:48:52

bobbym

Online

Re: Evaluate this integral

Maple. If only Bondie was around to see what it did.

In mathematics, you don't understand things. You just get used to them.
I have the result, but I do not yet know how to get it.
All physicists, and a good many quite respectable mathematicians are contemptuous about proof.

#50 2012-07-25 23:04:48

anonimnystefy
Real Member

Offline

Re: Evaluate this integral

No, I meant, what did you try with LaTeX?

The limit operator is just an excuse for doing something you know you can't.
“It's the subject that nobody knows anything about that we can all talk about!” ― Richard Feynman
“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment