Thursday, December 23, 2010

Funneh!

Omg Christmas is coming!!! I'm so excited for nothing lol.

Btw, these are damm funny.

Physicists
http://xkcd.com/793/

Dimensional analysis
http://xkcd.com/687/

Thanks Ray XD..

Friday, December 17, 2010

best mother


look at what my mum sent me.

Wednesday, December 15, 2010

(0,0)

Somehow after two years in school. I feel like I have returned to square one. Still the directionless mathematician. Been reading alot recently, completed a proof on the fundamental theorem of algebra.

Gosh its been so long since I did any Maths here.

The fundamental theorem of algebra states that any polynomial in complex coeeficients has at least one complex root.

Its a simple collorary then that a polynomial of degree n will have n complex roots, since we can divide the original polynomial by the factor x-r, where r is the root, to get another polynomial of degree n-1, which will itself have at least one root.

The proof sketch hinges on the fact that a general polynomial, hereafter refered to as f(z), where f(z) = az^n + bz^(n-1) + ... + k , where a,b,...,k are complex;

1) is smooth, which means that as z changes gradually, so does f(z).
2) can be approximated by az^n for large z (meaning that the modulus of z is large)
3) is close to the constant term k for small z (meaning that the modulus of z is small)

First we consider the image of f(z) in the complex plane when modulus of z is large. It will trace a large circle about the origin of radius az^n as all the other terms in the polynomial become relatively small.

Then we consider the image when the modulus of z is small, it will trace a small circle about the constant term k, as all the other terms in the polynomial become small. We can also, assume without loss of generality that k is not zero.

Hence as the value of z shifts throughout the complex plane, decreasing in magnitude, the image of z will deform from the large circle about the origin, to the small cicle about the constant term k smoothly. In doing so, it must cross the origin at least once. Hence there must be a value of z which the image is zero, meaning that f(z) must be zero for at least one value of z, which completes the proof sketch.

I think this one is due to Gauss, one of the many proofs of this that he supplied during his lifetime.

It is regretful to think that even Euler couldn't figure this one out.

Monday, December 6, 2010

Rapunzel

Todays gonna be the third time i watch Rapunzel (Tangled in US). Must-watch for all Disney fans.

Its the first Disney fairy tale to break gender stereotype. Although the film feels modern in both its script and art direction, there is an unmistakable quality of Disney magic to it. Very heartwarming. 9/10.

Ok going to watch now. And please if you're gonna watch it, watch in 3D. I've watch both and the 3D one is much better.

Thursday, December 2, 2010

Holidayzzzz pom pom po pom.

Okay actually the title is a lyrics from the song "Holiday" by Boa. Really gives you the holiday moood hahahaha. Ok at least I think so. Was feeling quite emo about being lost during the holidays but cheered up after talking to someone.

For all the emo lovers out there, dun worry there is always someone more emo than you. His name is............

Jacky Cheung!!!!!


Okay this is my most emo song of all time. There was once after a heartbreak i rode home on a cab hearing this song at midnight. Most empty feeling ever...

Actually why am I even posting this. I'm far from being emo.



This is more like it. Cute girls are everywhere.