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Math Lovers United

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Jan. 13th, 2007 @ 10:16 pm
the_pr0letariat

Seeing as we're a math community, I thought some good old math humor would be appreciated!

Jan. 11th, 2007 @ 05:05 pm
the_pr0letariat
Dunno if an intro post is appropriate for this community, but I'm going to do one anyways!

I'm only a high school junior in a mere pre-calculus class, but for some reason I really enjoy doing math. I enjoy it to the point where I taught myself the entire trigonometry book in a matter of 5 days :-p. It's something that challenges me, lets me put my problem solving skills to work, and idk, it's just really interesting. Although I'm definetly not as awsome as math at some of the people here, hopefully we can all get along, and most important of all, I hope to learn really fancy stuff!

Pi or Pie? How about both?! Dec. 18th, 2006 @ 10:53 pm
corkyscrewed




On Wednesday, December 6, 2006, Big Boy spokesman Tony Michaels announced to press correspondents that Big Boy Restaurants, LLC will sponsor a nationwide promotion on March 14, 2007 in observance of pi day. Big Boy will award customers with "pi" certificates that will enable them to redeem a ten-inch fruit pie from any Big Boy restaurant within the continental United States free of charge (Hawaii locations excepted).
"Big Boy has always been a family restaurant. This is not just another marketing scheme engineered to attract consumers. This is much more than that—we are advocates of family time and lifelong learning. We take pride in the personal relationship we have with our costumers," Michaels explained.
On this day, customers may also receive a complimentary "pi" breakfast apple with maple syrup (pictured above).
Michaels added, "We think children will enjoy this aspect of the March 14 experience. How many restaurants do you know of that serve a breakfast like this that not only healthy and educational, but fun? This is something unique, and that's what we're aiming to do—create an experience that kids will look back on and say, 'do you remember when…?' 'That was so cool!' Like I said, we want to make this a unique family affair."
At the end of the press conference, Mr. Michaels added that he expects restaurants nationwide will be packed and suggests that you call ahead one week in advance to reserve your table if you plan on attending. 

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I came across this on the internet while I was surfing and thought this was pretty interesting. Can you guys believe it? What do you think?
Share this with all of your math-loving family and friends! Cheers!
Current Mood: amusedamused

Error bar Dec. 3rd, 2006 @ 01:08 pm
wicked_danu
This is a statistics question..
Does anybody know how to plot an error bar? I'm supposed to plot one for the results of some experiments, but I can't seem to find any clear-cut instructions anywhere else on the Internet. I have a very vague idea of what it should look like from a picture on the 'net, but nothing apart from that.

Any help would be appreciated :)

Vector Calc Help! Nov. 6th, 2006 @ 12:50 am
valefleur
Hello!

I was wondering if someone would be so kind to explain something to me. I'm given:
Tu = i + ðg/ðu(u0, v0)k and
Tv = j + ðg/ðv(u0, v0)k.

Can someone explain why
n= Tu x Tu = -ðg/ðu(u0, v0)i - ðg/ðu(u0, v0)j + k0?

Specifically I would like to know why Tu x Tu = -ðg/ðu(u0, v0)i - ðg/ðu(u0, v0)j + k. I understand why it doesn't equal 0 (or shouldn't according to the definition).
Thank you!
Other entries
» Homework question
Hi.

I need to prove that for S,T linear operators on V. ST and TS have the same eigenvalues. I've gotten as far as (say g is the eigenvalue and u is a nonzero vector): STu=gu so TS(Tu)=g(Tu). So TS has eigenvalue g corresponding to eigenvector Tu. But I don't know how to guarantee that Tu is nonzero. (Or how to resolve the possibility that it is zero)

Thanks for any help.
» this is kind of silly
are there any math icon communities on LJ?
» How to waste a day thinking you're doing physics
http://www.thecleverest.com/content/attractors.swf
» Is there life after analysis?
As a curiousity, and the answer is most likely yes because there are people who have lived through analysis, but as a curiousity, can one survive analysis? Like, actually without failing? Just thought someone in this community might know.
» Hello
Hello all! I just joined this community today. I am a Senior in High School and I am also a peer tutor for my school. Today I got asked a rather intesting math problem that one of the Algebra 1 classes at my school was assigned. It was actually rather hard to do. Nethier a friend of mine(who is a genius in Math) or my old math teacher could find the answer. We eventually got it by pushing the right buttons on a T89 calculator. Why the teacher thought an algebra 1 students could solve it,  I'll never know. I thought I might share the problem with you. See if you can solve it without a calculator.

So the teacher gave her class a table of values and asked simply to find the equation for it. Here is the table.

x     y
1    1
2    3
3    6
4   10
5   15
6    21

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