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Math Help - solve the formula for t1

  1. #1
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    solve the formula for t1

    <br />
\frac {a} = \frac {-v2-v1}{t2-t1}
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  2. #2
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    it should read a = then that v2-v1 over t2-t1
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  3. #3
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    Quote Originally Posted by imbadatmath View Post
    <br />
\frac {a} = \frac {-v2-v1}{t2-t1}
    a=\frac{v_2-v_1}{t_2-t_1}

    We start by multiplying both sides by t_2-t_1

    a(t_2-t_1)=v_2-v_1 \iff at_2-at_1=v_2-v_1 distribute

    -at_1=v_2-v_1-at_2 \iff t_1=\frac{at_2+v_1-v_1}{a} isolate t_1
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  4. #4
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    Quote Originally Posted by imbadatmath View Post
    <br />
\frac {a} = \frac {-v2-v1}{t2-t1}
    a(t_2 - t_1) = v_2 - v_1

    at_2 - at_1 = v_2 - v_1

    -at_1 = v_2 - v_1 - at_2

    t_1 = -\frac{v_2 - v_1}{a} - t_2

    By the way, your code reads
    \frac {a} = \frac {v2-v1}{t2-t1}

    What you wanted was
    a = \frac {v2-v1}{t2-t1}

    -Dan
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