Recent content by sarah2529

oh... now i noticed my problem. 4x - x^2 = 3 0 = x^2 - 4x + 3 0 = (x-3)(x-1) x = 1 and 3 Tiredness really made my brain crazy.

I'm just wondering because I found this crazy picture somewhere on the net. http://photos-h.ak.fbcdn.net/hphotos-ak-snc3/hs071.snc3/13845_1261921983558_1094945438_30798960_833983_n.jpg

Hello again guys! I got an A on my second exam! Woooohoooo! Thanks to MIT for the videos. haha!

OMG. I'm jumping so far. Do I really need to take "Introduction to analysis->...->Differential geometry" for me to understand Abstract algebra very much? Well I hope I can do that by myself because my curriculum only has until Multivariable calculus (I'm studying Multivariable calculus some...

I guess so. Nope. What's that? Yes, I'm taking Calculus 2 class right now. So little. But I know how to use row reduced in matrices. Thanks to the opencourseware. Basing on what you've asked, I really did jump so fast. So what would you recommend to me? I really want to understand those...

Read it many times but I still didn't understand some of the things you've said. I just don't get it how it is made. Anyway, do you know what's the pre-requisite for quaternion topics? Is it Linear Algebra? Because I don't understand most of the topics in the book Quaternions and Rotation...

I'm trying to look how the formula made on this http://www.gamedev.net/reference/programming/features/quatcam/page2.asp" . I want to know how this formula was derived. I tried to look on Quaternions and Rotation Sequences book but they use sin/cos which is so different on this. N.w = a.w*b.w...

Maybe you're right. I'll try to read again. But... really... B+... is... killing me... arrggghh... :'(

Can you please explain it more? I don't get what you are saying. Sorry.

I'm currently taking Calculus 2 class and really enjoyed it. I changed my study habits in math because I want to get an A+ on it. I practice indefinite and definite integrations problems everyday for my first exam. I answered most of the questions on my book and some problems I found on the...

How did Einstein come up with the equation E = mc^2? With his ideas only on a paper?

I've watched a documentary about jet engine. Is it really possible to just create something with just a piece of paper? Just using all the laws of physics then use it to construct something perfectly.

Now I understand. Thanks Borek. Anyone here knows where can I buy zinc and sulfur? Is there any products for that like the KNO3 in stump remover, sodium chloride in weed killer and etc.

Ok I guess I'll just use Zinc and Sulfur for my rocket. KNO3 is banned on my country and I don't want to be jailed for that. I wish I can buy these two components on a store somewhere here. By the way, what do you mean "relatively low specific impulse". Does the mixture of these component...

No one sell rocket motor on our country though fireworks is legal on my country. I'll try looking for a stump remover in ACE Hardware. But I'm pretty sure they don't have it but I'll try it.