Saturday, October 31, 2009

Have a Mathy...Happy Halloween!


HAPPY HALLOWEEN! As a treat, I share this picture I made based somewhat on something someone drew in my Multivariable Calculus class a year ago. And for those who don't know, eigenvalues are values associated with a square matrix that can be used to analyze its behavior in multiplying any vector. It's basically a scalar that can multiply with a corresponding eigenvector, so that when you multiply the square matrix and the eigenvector together, it is the same thing as multiplying the eigenvalue with the eigenvector (Ax = λx, where A is a square matrix, x is a nonzero vector, and λ is the eigenvalue).

I won't even start on the gradient (fx,fy) and what it does. It would take too long (and I don't really feel like explaining partial derivatives when I should be studying for my Differential Equations test).
"Trick or treat, trick or treat, give us something good to eat. If you don't, we don't care, we'll put red ants in your hair. Trick or treat, trick or treat, we love candy oh so sweet. Each and every Halloween we all say trick or treat!"

Monday, October 19, 2009

Math Geek Alert

This is just a random post cuz I need to waste time. (Conscience: Waste time? You don't have time for that! Get back to studying for your abstract algebra midterm! You want to fail?!) No, I don't want to fail. Thank you, conscience. But I can't study without my abstract algebra notes/textbook, now can I? (Conscience: *silence*) That's what I thought. So, ignoring the voice(s) in my head, here we go!


Q: What do you get if you divide the cirucmference of a jack-o-lantern by its diameter?
A: Pumpkin Pi!

A newlywed husband is discouraged by his wife's obsession with mathematics. Afraid of being second fiddle to her profession, he finally confronts her: "Do you love math more than me?"
"Of course not, dear - I love you much more!"
Happy, although sceptical, he challenges her: "Well, then prove it!"
Pondering a bit, she responds: "Ok... Let epsilon be greater than zero..."

*This one describes me...well, the last part anyway*
"So how's your boyfriend doing, the math student?"
"Don't mention that crazy pervert to me anymore! We broke up."
"How can you say such a nasty thing about him? He seemed to be such a nice boy."
"Imagine! He was restless during the days and couldn't sleep at night - always trying to solve his math problems. When he had finally done it, he wasn't happy: he would call himself a complete idiot and throw all his notes into the garbage. One day, I couldn't take it anymore, and I told him to drop math. You know what he told me?"
"No."
"He said, he enjoyed it!!!"

Q: What does the Ph.D. in math with a job say to the Ph.D. in math without a job?
A: `Paper or plastic?'

"What is Pi?"
A mathematician: "Pi is the ratio of the circumference of a circle to its diameter."
A computer programmer: "Pi is 3.141592653589 in double precision."
A physicist: "Pi is 3.14159 plus or minus 0.000005."
An engineer: "Pi is about 22/7."
A nutritionist: "Pie is a healthy and delicious dessert!"

At a conference, a mathematician proves a theorem.
Someone in the audience interrupts him: "That proof must be wrong - I have a counterexample to your theorem."
The speaker replies: "I don't care - I have another proof for it."
*I put this one here because in my abstract algebra class, my professor made the comment that one of the students would prove the next fourty theorems just by saying, "Because I say so," and we wouldn't question it*


Well...that's over. And I just killed an hour and a half. (Sorry time/clock/whatever controls hours.) That's what searching for math jokes does to you. And I never knew there were so many. Now I'm leaving this crazy joint I call my blog. (Conscience: So you gonna do your abstract algebra now?) Is the limit as x approaches zero of sin(x)/x equal to -1? (Conscience: Uhh...no?) There's your answer.

P.S. I actually had some cooler stuff, but blogspot apparently doesn't like me having too many spaces when I "draw" pictures via the keyboard. So I'll try to figure a way to share the fun things with you at a later date.