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#501 2012-05-18 10:15:25

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 81,654

Re: Bafflers?

Hi gAr;


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.

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#502 2012-05-18 17:21:07

gAr
Member
Registered: 2011-01-09
Posts: 3,462

Re: Bafflers?

Hi bobbym,


"Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense"  - Buddha?

"Data! Data! Data!" he cried impatiently. "I can't make bricks without clay."

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#503 2012-05-18 20:35:19

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 81,654

Re: Bafflers?

Hi gAr;


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.

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#504 2012-05-18 22:50:01

gAr
Member
Registered: 2011-01-09
Posts: 3,462

Re: Bafflers?

Hi,


"Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense"  - Buddha?

"Data! Data! Data!" he cried impatiently. "I can't make bricks without clay."

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#505 2012-05-19 00:05:05

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 81,654

Re: Bafflers?

Hi gAr;


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.

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#506 2012-05-19 01:36:01

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 81,654

Re: Bafflers?

Find the equation of the line that intersects x^2 - 4x - 6 at two points A and B, has a slope of 5 and the distance between A and B is exactly 10.


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.

Offline

#507 2012-05-20 02:03:45

gAr
Member
Registered: 2011-01-09
Posts: 3,462

Re: Bafflers?

Hi bobbym,

The composition of g.f's is something that I didn't know.
Woo hoo, that's amazing!
What other problems can it solve?


"Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense"  - Buddha?

"Data! Data! Data!" he cried impatiently. "I can't make bricks without clay."

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#508 2012-05-20 02:18:27

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 81,654

Re: Bafflers?

Hi gAr;

Anytime something depends on how many of the other. Basically it is for this type of problem. I do not remember whether Conroy does one but I know that Tucker showed me how. This is the standard book problem.

I have 2 die. I throw one and then throw the other as many times as the number that comes up on the first die.What are the probabilities for each possible sum?

So we use the composition of functions to do this:


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.

Offline

#509 2012-05-20 02:35:21

gAr
Member
Registered: 2011-01-09
Posts: 3,462

Re: Bafflers?

Hi,

Okay, thanks for the problem, and the nice solution.

Find the equation of the line that intersects x^2 - 4x - 6 at two points A and B, has a slope of 5 and the distance between A and B is exactly 10.


"Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense"  - Buddha?

"Data! Data! Data!" he cried impatiently. "I can't make bricks without clay."

Offline

#510 2012-05-20 02:59:30

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 81,654

Re: Bafflers?

Hi gAr;


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.

Offline

#511 2012-05-20 03:02:09

gAr
Member
Registered: 2011-01-09
Posts: 3,462

Re: Bafflers?

Thanks!
I'll take a break, see you later...


"Believe nothing, no matter where you read it, or who said it, no matter if I have said it, unless it agrees with your own reason and your own common sense"  - Buddha?

"Data! Data! Data!" he cried impatiently. "I can't make bricks without clay."

Offline

#512 2012-05-20 03:05:25

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 81,654

Re: Bafflers?

Okay, thanks for coming in and working on the problems.


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.

Offline

#513 2012-05-20 03:26:24

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 14,840

Re: Bafflers?

Hi bobbym


“Here lies the reader who will never open this book. He is forever dead.

“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

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#514 2012-05-20 05:42:34

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 81,654

Re: Bafflers?

Hi;


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.

Offline

#515 2012-05-20 06:04:44

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 14,840

Re: Bafflers?

And what is the correct one.


“Here lies the reader who will never open this book. He is forever dead.

“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

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#516 2012-05-20 06:06:45

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 81,654

Re: Bafflers?

Hmmmm. I feel a rant coming on...


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.

Offline

#517 2012-05-20 06:25:45

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 14,840

Re: Bafflers?


“Here lies the reader who will never open this book. He is forever dead.

“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

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#518 2012-05-20 06:35:03

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 81,654

Re: Bafflers?


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.

Offline

#519 2012-05-20 06:39:12

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 14,840

Re: Bafflers?

Last edited by anonimnystefy (2012-05-20 06:44:48)


“Here lies the reader who will never open this book. He is forever dead.

“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

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#520 2012-05-20 06:57:13

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 81,654

Re: Bafflers?

anonimnystefy wrote:

What is the point of simplifying?

Also,you are really starting to get on my nerves a little (not really,but I am lacking the right expression).When I simplify you say don't.When I don't you say simplify.I can't keep up with you.

I am not trying to get on your nerves. These threads demand a little bit more accuracy. We get that accuracy by correcting each other. I realize that is hard to do without offending someone. But I hope you will understand that someone who corrects you is at that moment your best friend, if he is right of course.

Would you leave an answer as 2 / 4 or 32 / 64 or 50 / 100? For one thing you might confuse the person who is marking your paper. 2630 / 104 does not immediately look like 1315 / 52.

I never say in an answer not to simplify except in some rare cases. We can talk about them if you like. Sometimes when working on a problem it is advantageous to not simplify until the end. Those cases are rare.


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.

Offline

#521 2012-05-20 07:22:51

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 14,840

Re: Bafflers?

Hi bobbym

I am not trying to offend you.I noted that I was lacking the right expression.

Well,I usually cancel,but a person marking my paper should be an expert on the subject capable on recognizing different forms of an answer.

Let's discuss it,but in another thread,so to not bury your problem.


“Here lies the reader who will never open this book. He is forever dead.

“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

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#522 2012-05-20 08:31:58

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 81,654

Re: Bafflers?

I am not offended. You should not be trying to keep up with me. Never compete with an old man. There are two possibilities:

1)You beat him but you get no credit because everyone thinks you just beat a has been, a spent force long past his prime.

2) He uses his tremendous experience to beat you and you look doubly ridiculous having just lost to Grandpa.


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.

Offline

#523 2012-05-20 08:52:14

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 14,840

Re: Bafflers?

Who is trying to keep up with you?


“Here lies the reader who will never open this book. He is forever dead.

“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

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#524 2012-05-20 08:53:03

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 81,654

Re: Bafflers?

That is what you said in your quote.


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.

Offline

#525 2012-05-20 09:09:07

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 14,840

Re: Bafflers?

Oh,that! That was not the same meaning you used.


“Here lies the reader who will never open this book. He is forever dead.

“Taking a new step, uttering a new word, is what people fear most.” ― Fyodor Dostoyevsky, Crime and Punishment

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