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Homework Help: Finding arc length

  1. Oct 9, 2009 #1
    1. The problem statement, all variables and given/known data
    Find the arc length of r(t)= <10sqrt(2), e^10t, e^-10t>, 0 <_ t <_ 1.
    <_ is greater than or equal to.

    2. Relevant equations

    arc length= integral(magnitude of the derivative of r(t))

    3. The attempt at a solution

    i thought I figured the answer out and got an arc length of 31149.3, but my online homework is telling me this is the wrong answer. Im not sure what im doing wrong.
  2. jcsd
  3. Oct 9, 2009 #2


    Staff: Mentor

    We can't tell you what you did wrong if we can't see your work. Please show us what you got for r'(t) and |r'(t)|.
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