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Math Help - how to write an acceleration vector (for AP exam)

  1. #1
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    how to write an acceleration vector (for AP exam)

    Is is permissible to write an acceleration vector like they do in physics? So instead of the AP style <3t, t-4>, the vector could be written as (3t)i+(t-4)j?

    Thanks

    Bret
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  2. #2
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    Re: how to write an acceleration vector (for AP exam)

    yes, you can... vectors can be written (at least, I know this forms) as:

    \overlinearrow{a}=(a,b)

    \overlinearrow{a}=a\hat{i}+b\hat{j}

    \overlinearrow{a}=\begin{pmatrix}<br />
a\\ <br />
b<br />
\end{pmatrix}

    sorry, I don't know why TeX isn't working in the last form :c
    Last edited by Esteban; February 28th 2013 at 05:15 AM.
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  3. #3
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    Re: how to write an acceleration vector (for AP exam)

    Thanks!

    All my math students are in physics now so I was thinking it would be smart to keep the notation from physics consistent in math.

    Bret
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    Re: how to write an acceleration vector (for AP exam)

    Quote Originally Posted by Esteban View Post
    yes, you can... vectors can be written (at least, I know this forms) as:

    \overlinearrow{a}=(a,b)

    \overlinearrow{a}=a\hat{i}+b\hat{j}

    \overlinearrow{a}=\begin{pmatrix}<br />
a\\ <br />
b<br />
\end{pmatrix}

    sorry, I don't know why TeX isn't working in the last form :c
    You can use \vec instead of \overlinearrow:

    \vec{a}

    and array instead of pmatrix:

    \left(\begin{array}{c}a\\ b\end{array}\right)

    The <br\> thing happens when you put pieces of the array on separate lines.

    - Hollywood

    Actually, it seems that pmatrix works:

    \begin{pmatrix}a\\ b\end{pmatrix}

    In fact, I think I like that better than what I got before with array.
    Last edited by hollywood; February 28th 2013 at 07:17 AM.
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