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Math Help - urgent help please!!

  1. #1
    Newbie
    Joined
    Aug 2009
    Posts
    5

    urgent help please!!

    how can i re-write the equation:

    t = -100 ln(9.8 - 0.01v)

    to make v the subject?


    i think it has something to do with e^t or something like that
    but i really need help

    thanks
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  2. #2
    Super Member
    Joined
    Jan 2009
    Posts
    715
    Quote Originally Posted by cawcutt92 View Post
    how can i re-write the equation:

    t = -100 ln(9.8 - 0.01v)

    to make v the subject?


    i think it has something to do with e^t or something like that
    but i really need help

    thanks
     t = -100 \ln(9.8 - 0.01v)

     \frac{t}{-100} = \ln(9.8 - 0.01v)

    then EXP both sides XD

     exp(\frac{t}{-100} ) =  exp(\ln(9.8 - 0.01v))

     exp(\frac{-t}{100} ) = 9.8 - 0.01v

     9.8 -  exp(\frac{-t}{100} ) = 0.01v
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  3. #3
    Newbie
    Joined
    Aug 2009
    Posts
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    thanks alot

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