Recent content by Nguyen Thanh Nam

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    Solving f'(x) = 0 at x=1 with a+b=0

    Very sorry. I though there are many guys here in the forums. sorry alot!
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    Solving f'(x) = 0 at x=1 with a+b=0

    Sorry, mein Fehler
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    How to Find a and b for a Derivative at 1?

    Yup, my class is at that lession, tis is an apllication. So, I didn't really understand you.:-) But I'll try to read it more.
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    Solving f'(x) = 0 at x=1 with a+b=0

    Well, Sorry but I couldn't find help @ Homework section, I try out here: Ok, they tell me to find a and b so that the function: f(x)= *Root(2-x^2) if -root(2)<=x<=1 *x^2 + ax + b if x>1 has derivative at 1 I got that the condition for this graph to be continuous at 1 is a+b=0 And I moved...
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    How to Find a and b for a Derivative at 1?

    OK. We'll check when x>1: lim (x->1+) of [f(x)-f(1)]/(x-1) = lim (x->1+) of [x^2+ax+b-1]/(x-1)] (from the function at my first post, I got that when x>1, f(x)=x^2+ax+b)
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    How to Find a and b for a Derivative at 1?

    Ok, they tell me tofind a and b so that the function: f(x)= *Root(2-x^2) if -root(2)<=x<=1 *x^2 + ax + b if x>1 has derivative at 1 I got that the condition for this graph to be continuous at 1 is a+b=0 And I moved to check out the derivative stuff: When x->1+, the derivative is 0...
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    Geometry: several problems. Try

    Oh wait, for the second problem, is MH the height of NMHE?
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    Exploring the Protein Code: A Look at an Outdated Source

    Hello! The following URL shows the protein code (from Codons) but it's quite old, so I don't know if it's still correct. http://img.photobucket.com/albums/v381/maxpayne_lhp/Maths%20and%20Other%20Sciences%20for%20the%20forums/0001.jpg
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    Geometry: several problems. Try

    That was easy, but the thing I got suck is the second problem: Triangle ABC with B=90 deg, AB=BC=a. SA is perpen to plate (ABC) @ A; SA=a.root3. M is a random point in AB. E is the midpoint of SC. Let MB=x. I 'm done with the first request: Prove that a plate alpha consists of ME and is perpen...
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    Geometry: several problems. Try

    Hello! see if you can get the results same as me ): Triangle ABC with AB=AC=a, BAC=90 deg. SA is perpendicular to plate (ABC) @ A. SA=a, also! In SB: ES=2EB. H is in plate (SBC) so that AH is perpendicular to plate (SBC). Plate alpha consists of AE and perpendicular ro plate SBC. Figure out...
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    Finding Solutions for a Complex Equation

    Neither do I, I can solve those that miss ax^3, never before for ax^2
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    Can I Upload Images Here? Problem Solving for Non-Native English Speakers

    They are continuous in '1' When you check out [f(x)-f(1)]/(x-1), will we need to let them into ways: x->1+ and x->1-, right? But how to write down? :-) Andm you see, you need to download the img file, any better way so that it's shown in the post? As some mathematical functions are long and...
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    Can I Upload Images Here? Problem Solving for Non-Native English Speakers

    Can I upload the images here? so that whenever you choose my topic, they're shown, no need for you to open attachments? Any way, I am a non-native so I get difficulties solving this problem. Tell me! (it's easy but I can't use English to state some sentence) The URL of the problem: Thanks
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