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#10326 2013-04-21 03:42:04

zetafunc.
Guest

Re: Linear Interpolation FP1 Formula

darn, I guess Fourier Series cannot provide me with an elegant solution.

#10327 2013-04-21 03:57:54

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,791

Re: Linear Interpolation FP1 Formula

The funny thing is,


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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#10328 2013-04-21 04:06:38

zetafunc.
Guest

Re: Linear Interpolation FP1 Formula

That is what I was trying to show -- but I can't do it...

#10329 2013-04-21 04:38:47

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,791

Re: Linear Interpolation FP1 Formula

Are you allowed to use a table of sums?


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

#10330 2013-04-21 04:46:15

zetafunc.
Guest

Re: Linear Interpolation FP1 Formula

Nope, we get a formula booklet with just some standard Taylor series, trig formulae, stats tables, etc.

I'm also a bit worried about using tricks like Fourier series because to score a full 20 marks on one question, your argument has to be flawless -- for instance, I probably won't use contour integration in STEP, since I'd need to justify a lot of stuff. As a result, I tend to just look for the solution they want me to find.

#10331 2013-04-21 04:49:47

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,791

Re: Linear Interpolation FP1 Formula

That is like asking a runner to use only one leg.


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

#10332 2013-04-21 04:50:26

zetafunc.
Guest

Re: Linear Interpolation FP1 Formula

Rules are rules unfortunately.

#10333 2013-04-21 04:57:26

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,791

Re: Linear Interpolation FP1 Formula

Without one, summing the partial series by series methods will be tough.


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

#10334 2013-04-21 05:21:45

zetafunc.
Guest

Re: Linear Interpolation FP1 Formula

I've been able to reduce the problem to

with multiple use of the sum to product trig formulae. But I'm not sure if that helps.

#10335 2013-04-21 05:29:06

zetafunc.
Guest

Re: Linear Interpolation FP1 Formula

W|A is saying I'm wrong, will have to try another approach.

#10336 2013-04-21 05:35:13

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,791

Re: Linear Interpolation FP1 Formula

Hi;

It is not going anywhere from there that I can see. You have an idea?


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

#10337 2013-04-21 06:53:58

zetafunc.
Guest

Re: Linear Interpolation FP1 Formula

TSR's solution makes sense to me now, seems pretty simple now that I think about it...

#10338 2013-04-21 06:55:33

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,791

Re: Linear Interpolation FP1 Formula

Very good then. Glad you figured it out.

I need a little break be back soon.


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

#10339 2013-04-21 06:57:25

zetafunc.
Guest

Re: Linear Interpolation FP1 Formula

The hardest part is the recognition of things like sin(22pi/23) = sin(pi/23). Other than that, it is just a case of equating imaginary parts with De Moivre's. I'll remember this trick for similar series!

Okay, see you later.

#10340 2013-04-21 11:37:52

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,791

Re: Linear Interpolation FP1 Formula

Hi;

Very good work.


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

#10341 2013-04-21 11:40:31

zetafunc.
Guest

Re: Linear Interpolation FP1 Formula

You mean, very good work to whoever made that solution... I simply read it.

Nothing from adriana this weekend. Apparently she, her sister and her brother have all deleted their Facebook accounts...?

#10342 2013-04-21 11:42:57

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,791

Re: Linear Interpolation FP1 Formula

That means she is going undercover.


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

#10343 2013-04-21 11:45:10

zetafunc.
Guest

Re: Linear Interpolation FP1 Formula

Undercover? Her Google+ profile is still active though...

#10344 2013-04-21 11:50:50

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,791

Re: Linear Interpolation FP1 Formula

Yes but getting off of facebook is sort of sacrilegious.


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

#10345 2013-04-21 18:24:20

zetafunc.
Guest

Re: Linear Interpolation FP1 Formula

Yes, but it is strange to see adriana, her sister and her brother all come off of it at once...

#10346 2013-04-21 22:43:42

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,791

Re: Linear Interpolation FP1 Formula

Sounds like they are all preparing to be abducted by aliens...


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

#10347 2013-04-21 23:00:06

zetafunc.
Guest

Re: Linear Interpolation FP1 Formula

I just assumed it was because the exam season is approaching, although she never did this during January I don't think... she's also not been active on chat as far I have been able to see. Maybe she is genuinely busy.

#10348 2013-04-21 23:05:02

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,791

Re: Linear Interpolation FP1 Formula

Maybe, but not as busy as you.


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

#10349 2013-04-21 23:06:03

zetafunc.
Guest

Re: Linear Interpolation FP1 Formula

I would think she should be busier than me because when I last talked to adriana she had only done 10 STEP questions.

#10350 2013-04-21 23:13:29

bobbym
Administrator
From: Bumpkinland
Registered: 2009-04-12
Posts: 90,791

Re: Linear Interpolation FP1 Formula

That suggests she is not busy at all. Perhaps between parties she is working on 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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