Recent content by sarah2529

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    Volume of Cylindrical Shells: y = 4x - x^2, y = 3; about x = 1

    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.
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    How to solve for x when it's in exponent?

    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
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    Improving Math Study Habits: Tips for Acing Calculus 2

    Hello again guys! I got an A on my second exam! Woooohoooo! Thanks to MIT for the videos. haha!
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    Understanding Quaternion Multiplication for 3D FPS Camera: A Simplified Approach

    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...
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    Understanding Quaternion Multiplication for 3D FPS Camera: A Simplified Approach

    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...
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    Understanding Quaternion Multiplication for 3D FPS Camera: A Simplified Approach

    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...
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    Understanding Quaternion Multiplication for 3D FPS Camera: A Simplified Approach

    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...
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    Improving Math Study Habits: Tips for Acing Calculus 2

    Maybe you're right. I'll try to read again. But... really... B+... is... killing me... arrggghh... :'(
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    Improving Math Study Habits: Tips for Acing Calculus 2

    Can you please explain it more? I don't get what you are saying. Sorry.
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    Improving Math Study Habits: Tips for Acing Calculus 2

    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...
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    Inventing something with just a piece of paper?

    How did Einstein come up with the equation E = mc^2? With his ideas only on a paper?
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    Inventing something with just a piece of 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.
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    KNO3 Permit Needed for Rocket Building Checklist

    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.
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    KNO3 Permit Needed for Rocket Building Checklist

    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...
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    KNO3 Permit Needed for Rocket Building Checklist

    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.
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