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#26 2011-07-31 22:59:24

gAr
Member
Registered: 2011-01-09
Posts: 3,479

Re: Series

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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#27 2011-07-31 23:27:27

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,879

Re: Series

Hi gAr;


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

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#28 2011-07-31 23:34:45

gAr
Member
Registered: 2011-01-09
Posts: 3,479

Re: Series

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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#29 2011-07-31 23:40:21

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,879

Re: Series

Hi gAr;


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

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#30 2011-07-31 23:43:36

gAr
Member
Registered: 2011-01-09
Posts: 3,479

Re: Series

Hi,

You integrated only LHS???!!!


"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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#31 2011-07-31 23:51:07

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,879

Re: Series

Hi gAr;

I forgot that?! But it is not helping, now I am getting pi^3 / 6 for the RHS ( I used a definite integration from 0 to pi )


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

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#32 2011-07-31 23:52:56

gAr
Member
Registered: 2011-01-09
Posts: 3,479

Re: Series

Hi bobbym,

Now it's okay.
Remember that there is a pi on the LHS.


"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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#33 2011-07-31 23:56:43

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,879

Re: Series

Hi gAr;


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

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#34 2011-08-01 00:00:25

gAr
Member
Registered: 2011-01-09
Posts: 3,479

Re: Series

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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#35 2011-08-01 00:02:15

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,879

Re: Series

Hi gAr;


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

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#36 2011-08-01 00:07:00

gAr
Member
Registered: 2011-01-09
Posts: 3,479

Re: Series

You are welcome!


"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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#37 2011-08-01 00:47:34

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,879

Re: Series

Next ones look tougher!


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

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#38 2011-08-01 00:53:39

gAr
Member
Registered: 2011-01-09
Posts: 3,479

Re: Series

Hi,

Here's a solution

Hi bobbym,

Trigonometric identities will be useful for the other two.
Of course, other methods may be there, I don't know yet!


"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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#39 2011-08-01 01:33:15

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,879

Re: Series

Hi gAr;


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Offline

#40 2011-08-01 01:41:19

gAr
Member
Registered: 2011-01-09
Posts: 3,479

Re: Series


"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

#41 2011-08-01 01:43:10

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,879

Re: Series

Hi;


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

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#42 2011-08-01 01:44:23

gAr
Member
Registered: 2011-01-09
Posts: 3,479

Re: Series

Hi,

Which step?


"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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#43 2011-08-01 01:46:50

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,879

Re: Series

Hi gAr;

I can not do this sum!


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

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#44 2011-08-01 01:52:22

gAr
Member
Registered: 2011-01-09
Posts: 3,479

Re: Series

Oh, we are not evaluating there. We substitute for z from the previous step.


"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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#45 2011-08-01 01:55:29

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,879

Re: Series

Hi;

I got it now! Thanks!


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Offline

#46 2011-08-01 02:00:24

gAr
Member
Registered: 2011-01-09
Posts: 3,479

Re: Series

You're welcome!


"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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#47 2011-08-01 02:08:28

gAr
Member
Registered: 2011-01-09
Posts: 3,479

Re: Series

I see that term by term integration works wonders in some of the cases!

5)

Find


"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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#48 2011-08-01 02:22:01

anonimnystefy
Real Member
From: The Foundation
Registered: 2011-05-23
Posts: 15,673

Re: Series

hi gAr

Last edited by anonimnystefy (2011-08-01 02:23:53)


“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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#49 2011-08-01 02:32:08

gAr
Member
Registered: 2011-01-09
Posts: 3,479

Re: Series

Hi anonimnystefy,

You may try.
But if you try to sum the fractions separately, they both diverge.


"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

#50 2011-08-01 18:56:53

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,879

Re: Series

Hi gAr;

Working on 5), it is a nice one.


In mathematics, you don't understand things. You just get used to them.

I agree with you regarding the satisfaction and importance of actually computing some numbers. I can't tell you how often I see time and money wasted because someone didn't bother to run the numbers.

Offline

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