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Seemingly Simple Algebra (Exponent Rules)

  1. Jan 15, 2012 #1
    I understand that

    a(b/c)

    =

    [itex]\sqrt[c]{}(a^b)[/itex]

    so this suggests that
    (-1)(2/3)

    [itex]\sqrt[3]{}((-1)^2)[/itex] = -1 right?

    Wolfram alpha and my calculator disagree.
     
  2. jcsd
  3. Jan 16, 2012 #2
  4. Jan 16, 2012 #3

    chiro

    User Avatar
    Science Advisor

    Hey januc and welcome to the forums

    Convert things to the exponential form if you want to do stuff like this. Exponential form is e^(i x theta) = cos(theta) + i x sin(theta)
     
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