[realmeatychunks]

Hey All,

I'm having trouble with this question, and seeing how there are a lot of smart people here I'd see if anyone around here had any ideas.

Here's the question:



Of course, it should be "Prove that if any ... then lim f(x)=0 [as x goes to infinity]

Any suggestions or help?

Thanks,

Greg

[SamuraiDL]

I suggest another forum...

[willed]

42

[yukon]

It's five. It's always five.
http://www.ology.org/principia/body.html (search "fives")

(btw, there are forums online for math questions, along with math expert forums. Asking mac users math questions is like asking linux users questions on interior decorating, a few might figure it out but most will just make jokes).

[d0ubled0wn]

Just copy and paste it into Mathematica.

[The Godfather]

People, people,
If any one else comes with a math question, I will have to start charging money.

[realmeatychunks]

Well, I figured it was worth a shot.

I never had much hope for you all anyway ;-)

[SamuraiDL]

yeah loose all expectations of any of us right now, and you will be ahead of the game.

[brapper]

I used to take math.

[E's Lil Theorem]

Originally posted by realmeatychunks:
Hey All,

I'm having trouble with this question, and seeing how there are a lot of smart people here I'd see if anyone around here had any ideas.

Here's the question:

[img]http://expressexcess.com/analysis.jpg[img]

....

[Removed inline image: ALL inline images must be no wider than 500 pixels. --tooki]

I'm not an analysis genius, but I might be able to help. What was it that you were asked to prove?

[realmeatychunks]

Originally posted by E's Lil Theorem:
I'm not an analysis genius, but I might be able to help. What was it that you were asked to prove?

I've uploaded the image again.

[E's Lil Theorem]

Originally posted by realmeatychunks:
I've uploaded the image again.

All right, nifty. Are you following the hint? You should be. Where are you stuck?

[realmeatychunks]

Originally posted by E's Lil Theorem:
All right, nifty. Are you following the hint? You should be. Where are you stuck?

I've got the solution, thanks. Just need to digest it a bit to actually understand what it's saying. I find analysis so abstract and difficult to grasp, especially compared to calculus which comes pretty easily to me.

Take care,
Greg

edit: English certainly doesn't though ;-)

[Albert Pujols]

Originally posted by realmeatychunks:
I find analysis so abstract and difficult to grasp, especially compared to calculus which comes pretty easy to me.

I got a C in Analysis

[realmeatychunks]

Originally posted by Albert Pujols:
I got a C in Analysis

Well do you have any advice in retrospect? I'm also doing poorly, but taking measures to do really well on the final (I hope).

Greg

[E's Lil Theorem]

Originally posted by realmeatychunks:
Well do you have any advice in retrospect? I'm also doing poorly, but taking measures to do really well on the final (I hope).

Greg

My negative math experience comes from Abstract Algebra. I really, really disliked that class even though I liked many of it's applications (number theory, cryptography, etc.). How did I get through it? It was one of the only classes for which I attended office hours and did every single HW assignment (and sometimes more). It didn't come naturally to me, but eventually I became "book-smart" at it. So, if you have the time, work on more problems than those assigned and when you get stuck visit your professor.

Good luck.

[parallax]

Originally posted by realmeatychunks:
Well do you have any advice in retrospect? I'm also doing poorly, but taking measures to do really well on the final (I hope).

Greg

I got a B+ in the class. I would have done better if I made some realizations earlier. What book are you using, Rudin?

I figured out far too late that you're supposed to read the book /well/ before you do the problem set. It sounds obvious, but it wasn't to me.

If you're using Rudin definitely read and own every single character of that book. Make sure you digest every paragraph before you think about moving on. Don't assume you'll go back and reread it later.

Math problems take a while to digest; start them as soon as you're assigned them by reading them over and the related material. Let them sit in your system for a while before you work on them. The subconscious plays an interesting role in solving problems.

I was on freshman pass/fail so I didn't give a **** about my grade, but in retrospect I wish I would've. Although I probably will never need analysis, it's a totally sweet subject. I might reread Rudin this summer.

Good luck! Hope you do well!

[awaspaas]

That was about 8 years ago. I wouldn't know where to start now.

[himself]

...uhh, wanna do my taxes?

[realmeatychunks]

Originally posted by parallax:
I got a B+ in the class. I would have done better if I made some realizations earlier. What book are you using, Rudin?

I figured out far too late that you're supposed to read the book /well/ before you do the problem set. It sounds obvious, but it wasn't to me.

If you're using Rudin definitely read and own every single character of that book. Make sure you digest every paragraph before you think about moving on. Don't assume you'll go back and reread it later.

Math problems take a while to digest; start them as soon as you're assigned them by reading them over and the related material. Let them sit in your system for a while before you work on them. The subconscious plays an interesting role in solving problems.

I was on freshman pass/fail so I didn't give a **** about my grade, but in retrospect I wish I would've. Although I probably will never need analysis, it's a totally sweet subject. I might reread Rudin this summer.

Good luck! Hope you do well!

Thanks for the advice -- I've often hoped I could start the problem sets earlier, but unfortunately I usually have such a large list of assignments they just get pushed back in the queue. What you've said certainly rings true though, as it gives more time to seek out help for difficult problems (whether it be peers or the professors office hours or whatever).

The book we're using is "Real Analysis: A first Course" by Russell A. Gordon. I can't say I'm entirely thrilled by it. The proofs and examples that are actually included seem to be relatively easy to understand and digest, but there are so many things "left as an exercise to the reader" that I would have really benefited from if they were included. It'll be right in the middle of a proof that I'm struggling to understand and then something seemingly appears out of no where and "it's left as an exercise to the reader to prove this". Frustrating, to say the least.

My negative math experience comes from Abstract Algebra. I really, really disliked that class even though I liked many of it's applications (number theory, cryptography, etc.). How did I get through it? It was one of the only classes for which I attended office hours and did every single HW assignment (and sometimes more). It didn't come naturally to me, but eventually I became "book-smart" at it. So, if you have the time, work on more problems than those assigned and when you get stuck visit your professor.

Good luck.

I'm taking abstract algebra as well. I can't say I'm really enjoying that class either. This semester has really discouraged me from math, I used to really love it and enjoy it, but perhaps I only felt that way because I was only really exposed to Calculus and Differential Equations.

Thanks to all who offered advice, it is much appreciated.

Take Care,
Greg

[Sherwin]

Originally posted by realmeatychunks:


Any suggestions?

Yep. Flunk out, learn to play the guitar and become a rock/pop star instead. It's much easier than that stuff. And you get more chicks.