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#26 Re: Help Me ! » Factoring » 2015-09-29 08:12:00
Cool. Thanks. I appreciate it.
#27 Re: Help Me ! » Factoring » 2015-09-29 07:59:57
I mean, I pretty much grasp (but need to practice) this from math is fun page...just wondering how much farther it goes?
Identities:
a2 - b2 = (a+b)(a-b)
a2 + 2ab + b2 = (a+b)(a+b)
a2 - 2ab + b2 = (a-b)(a-b)
a3 + b3 = (a+b)(a2-ab+b2)
a3 - b3 = (a-b)(a2+ab+b2)
a3+3a2b+3ab2+b3 = (a+b)3
a3-3a2b+3ab2-b3 = (a-b)3
#28 Re: Help Me ! » Factoring » 2015-09-29 07:58:04
Oh, u mean (x+2)(x+3)? I know that from that adding and multiplying trick...I think.
#29 Re: Help Me ! » Factoring » 2015-09-29 07:49:13
Unless I should have read that as x^2 + 5x + 6 ??
#30 Re: Help Me ! » Factoring » 2015-09-29 07:45:46
No. I barely understand the question. Haha. I would see that as (x^2+5)(x+6). The only like term I see is the x and wouldn't know how to reconcile the 5 and 6 except with some strange equation that I doubt would be the correct way to go...would love to see the solution.
#31 Help Me ! » Factoring » 2015-09-29 06:17:25
- Newman
- Replies: 20
Yes, I forgot how ridiculous factoring can be. Haha. How crazy does this process get? I understand it takes practice and memorizing identities but does someone have an example and solution for how far it typically goes? I assume there are situations where you could pile on more and more advanced concepts but if anyone has examples, I'd appreciate it. Thanks! How many identities do I have to know? Sheesh. How much time should I expect to spend on this one topic?
#32 Re: Dark Discussions at Cafe Infinity » Math Jobs and Careers » 2015-09-23 13:11:59
haha! riight. I've heard it can help. Hahaha!! 
#33 Dark Discussions at Cafe Infinity » Math Jobs and Careers » 2015-09-23 09:17:29
- Newman
- Replies: 5
I was just wondering what some of the jobs and careers people on this forum have/had that involve their mathematical endeavors. Specific or not, what do you feel about the working world relative to the knowledge and skills you've attained? Are there jobs you could walk right into? Ambitions? I don't know. I'm simply curious about anything you more experienced math buffs could offer.
Thanks.
So far, my questions have been pretty ill-conceived, I know. Haha. They will get better.
#34 Help Me ! » Econ Math Formula » 2015-09-23 03:48:02
- Newman
- Replies: 0
Okay, here is something that I understand but not because of the formula you're looking at. I would love to see how you guys interpret and think about this. The more step-wise your explanation, the better. I understand sigma in a basic way but I'm sure you could add a lot in the context of a formula like this.
As an aside, I just realized as I was trying to write a dumb math joke that I forgot the formula for ever diminishing limits. I'm sure that is sloppy and terrible wording but if you know what I'm trying to describe, I'd appreciate that info too. Haha.
Thanks!!
#35 Re: Help Me ! » Econ Models » 2015-09-22 10:06:56
Hi;
Can you post a problem in that?
Absolutely. http://inforumweb.umd.edu/papers/publishedwork/books/craft1.pdf The first model, which is something I basically already know pretty well, begins on page 15. However, model 5 begins on page 41 and I'm not sure how a mathematician would view this type of thing.
There are many formulas but they are part of a model so it's written with a combo of english and math. If this format doesn't work for ya, I completely understand. Let me know if you need the question phrased differently from me. If you feel like looking it over, I'm sure you'd have some insights but it doesn't appear to be a cut and paste type thing.
Again, I've only worked through model 1 which I understand well just from my econ background and the math is pretty simple. Although, I could see how the concepts could be difficult for someone with no econ background.
And let me know if there is a better way to address this. My questions will get more specific as I go on with this so I apologize in advance for any inconvenience. Haha.
Thanks
#36 Re: Help Me ! » Econ Models » 2015-09-22 06:54:04
Well, I downloaded G7 and am starting with a pdf titled The Craft Of Economic Modeling by Clopper Almon. It seems like a good intro but...If anyone knows anything about this stuff, lemme know. Thx.
#37 Help Me ! » Econ Models » 2015-09-22 04:43:56
- Newman
- Replies: 3
I was wondering if anybody here knows a great place to start familiarizing myself with economic modeling? I believe DSGE is the most common? I've done IS-LM type stuff but just want to begin learning the language of sophisticated vector regression analysis. Also, if u know the software or other tools I will need? I realize I'm rambling and jumping around a bit but I kind of want to have someone break it down for me a bit so that I can be thinking clearly and planning my education on the topic properly.
Thank you!!
#38 Re: Introductions » Old And Rediscovering Math » 2015-09-21 14:42:14
Hi;
Welcome to the forum. Going back to school is one idea but whatever you do get involved on a forum like this one where you can ask questions.
Indeed. This forum is amazing. My explorations so far have been extremely rewarding. The knowledge you folks possess is beautiful (sorry haha) to me. I hope u all take time off occasionally to appreciate that. WARNING: The questions must flow! Haha. Soon.
#39 Introductions » Old And Rediscovering Math » 2015-09-21 08:28:14
- Newman
- Replies: 7
Hi guys,
I'm 40! Haha. For some reason, I've become obsessed with math. Twenty years ago, I graduated college with a BA in psychology but to my astonishment, I'm seriously considering going back to school to get my math degree. I've worked in economics but the math was pretty elementary (non-existent by your standards probably. Haha). I didn't have to do any real hardcore modeling or even statistics really.
I always did well and enjoyed math but didn't have any particular love for it...until recently. Just relearning quadratic equations has been a thrill. I assume it will take about a year to even be near-ready to begin college level math again which is funny because I tested out of everything but statistics when I was a dumb freshman 22 years ago. Haha.
I'm just starting to get back into it. So, I was wondering what tips and suggestions you guys have here. One year of prep seems long to me but I want to be realistic. I understand that math is like a musical instrument or language that one needs to practice. I taught music for 6 years so I understand how that works.
Thanks guys and gals!!!!