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Thread: First Year Mathematics A (Differentiation & Linear Algebra)

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    Supreme Member Flop21's Avatar
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    First Year Mathematics A (Differentiation & Linear Algebra)

    Is there a thread for math help for 1131 (or other first year math equivalent) on here?

    If not, this thread will be for posting (uni math) questions to get help for.
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    Supreme Member Flop21's Avatar
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    Re: MATH1131 help thread

    I'm watching Kahn academy videos on vectors. I'm understanding everything so far, the guy is using (x,y) notation, but then suddenly switches to a different notation I'm not familiar with. This happened in my class lecture as well.

    Can someone help me understand what this notation means:
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    Magniloquent Member soloooooo's Avatar
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    Re: MATH1131 help thread

    Good idea - perhaps this thread should be moved to the UNSW science faculty sub forum though?

    http://community.boredofstudies.org/...ence-medicine/

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    Supreme Member Flop21's Avatar
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    Re: MATH1131 help thread

    How is R^2 different to R? (and by R I mean the special R/real numbers).
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    Supreme Member Flop21's Avatar
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    Re: MATH1131 help thread

    Quote Originally Posted by soloooooo View Post
    Good idea - perhaps this thread should be moved to the UNSW science faculty sub forum though?

    http://community.boredofstudies.org/...ence-medicine/
    Yeah wasn't sure whether to or not. I'm not sure how 1st year uni maths differs from uni to uni, but assumed it would be similar. So everyone can just post their math problems and get help here [or mods can move it wherever best].
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    Re: MATH1131 help thread

    Quote Originally Posted by Flop21 View Post
    How is R^2 different to R? (and by R I mean the special R/real numbers).
    4025808, Flop21 and Nailgun like this.

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    Re: MATH1131 help thread

    Quote Originally Posted by Flop21 View Post
    I'm watching Kahn academy videos on vectors. I'm understanding everything so far, the guy is using (x,y) notation, but then suddenly switches to a different notation I'm not familiar with. This happened in my class lecture as well.

    Can someone help me understand what this notation means:
    Flop21 likes this.

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    Cult of Personality Shadowdude's Avatar
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    Re: MATH1131 help thread

    the unsw mathematics society has a facebook page for such queries


    Did you join MathSoc?
    B Arts / B Science (Advanced Mathematics), UNSW

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    Ancient Orator leehuan's Avatar
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    Re: MATH1131 help thread

    I've just been using my own thread for assistance with 1151.

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    Taking a break! dan964's Avatar
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    Re: MATH1131 help thread

    Quote Originally Posted by Flop21 View Post
    I'm watching Kahn academy videos on vectors. I'm understanding everything so far, the guy is using (x,y) notation, but then suddenly switches to a different notation I'm not familiar with. This happened in my class lecture as well.

    Can someone help me understand what this notation means:
    That notation with a vertical arrow is used to refer to a vector. Typically, e.g. in MATH201 at UOW, this notation is used to refer to row vectors; although it can be used to refer to column vectors as in the case here.

    (edit: Integrand already answered this)

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    Re: MATH1131 help thread

    Quote Originally Posted by dan964 View Post
    That notation with a vertical arrow is used to refer to a vector. Typically, e.g. in MATH201 at UOW, this notation is used to refer to row vectors; although it can be used to refer to column vectors as in the case here.

    (edit: Integrand already answered this)

    Some of the math tutors\lecturers at USYD refer to the arrow notation as the "Russian way" of writing it. Apparently the normal westernised one is basically a squiggly line that's under the letter.

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    Ancient Orator leehuan's Avatar
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    Re: MATH1131 help thread

    Quote Originally Posted by Silly Sausage View Post
    Some of the math tutors\lecturers at USYD refer to the arrow notation as the "Russian way" of writing it. Apparently the normal westernised one is basically a squiggly line that's under the letter.
    I guess that's just for the vector a etc.

    If you got given a vector as defined by ray AB though or something, then well you need the arrow above no matter what.

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    -insert title here- Paradoxica's Avatar
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    Re: MATH1131 help thread

    I write with a half-arrow.
    If I am a conic section, then my e = ∞

    Just so we don't have this discussion in the future, my definition of the natural numbers includes 0.

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    Re: MATH1131 help thread

    Quote Originally Posted by Paradoxica View Post
    I write with a half-arrow.
    Oh that, so do I. Who the hell has the time to put in the complete > when you can just use \

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    Re: MATH1131 help thread

    Quote Originally Posted by leehuan View Post
    Oh that, so do I. Who the hell has the time to put in the complete > when you can just use \
    Code:
    \overset{\rightharpoonup }{A}     \quad     \overset{B}{\leftarrow}


    This is for your sake, and possibly mine if I ever have to use vectors on BOS.

    Lol, an italicised backward slash is a vertical line. This is amusing.
    If I am a conic section, then my e = ∞

    Just so we don't have this discussion in the future, my definition of the natural numbers includes 0.

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    Ancient Orator leehuan's Avatar
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    Re: MATH1131 help thread

    Ah thanks. If I forget I'll just consult daum though. I've only recently begun typing LaTeX myself without any other software



    I use a swiggly line under stuff like b but when I refer to a vector with labelled endpoints I do that

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    Supreme Member Flop21's Avatar
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    Re: MATH1131 help thread

    How do I do the last parts of these questions. I understand the rest, but have no idea what to do when it comes to throwing in epsilon in there (the last questions/s).

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    Rambling Spirit
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    Re: MATH1131 help thread

    Quote Originally Posted by Flop21 View Post
    How do I do the last parts of these questions. I understand the rest, but have no idea what to do when it comes to throwing in epsilon in there (the last questions/s).


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    Re: MATH1131 help thread

    Quote Originally Posted by Flop21 View Post
    How do I do the last parts of these questions. I understand the rest, but have no idea what to do when it comes to throwing in epsilon in there (the last questions/s).

    i think you should ask the maple consultant that's on tomorrow morning

    i hear he's pretty awesome
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    Re: MATH1131 help thread

    Quote Originally Posted by Shadowdude View Post
    i think you should ask the maple consultant that's on tomorrow morning

    i hear he's pretty awesome
    are they suppose to help with actual questions or just how to use maple?
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    Metallic Oxide iforgotmyname's Avatar
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    Re: MATH1131 help thread

    Just let 6/(m-2)= eposilon
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    Supreme Member Flop21's Avatar
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    Re: MATH1131 help thread

    Quote Originally Posted by iforgotmyname View Post
    Just let 6/(m-2)= eposilon
    ahhHHHH

    that's how you do it lol
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    Re: MATH1131 help thread

    Quote Originally Posted by Flop21 View Post
    are they suppose to help with actual questions or just how to use maple?
    Either


    I'm sure most consultants don't mind helping with actual questions
    B Arts / B Science (Advanced Mathematics), UNSW

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    Re: MATH1131 help thread

    First time I've heard of this Greek letter "eposilon". What does it look like?
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    Re: MATH1131 help thread

    Quote Originally Posted by Drongoski View Post
    First time I've heard of this Greek letter "eposilon". What does it look like?
    Not sure if troll on spelling

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