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Exponential Derivative problem

  1. Sep 26, 2012 #1
    1. The problem statement, all variables and given/known data
    dy/dθ =2·3^(−θ)


    2. Relevant equations
    3. The attempt at a solution
    2*(d/dθ)(3^(-θ)
    2(3^(-θ)ln(3))
    (2ln(3))/(3^θ)

    I keep getting this wrong and I'm not sure why. Could someone point out my mistake?
     
  2. jcsd
  3. Sep 26, 2012 #2
    Could you maybe make your step-by-step process a little clearer? It's a little difficult for me to follow you.

    Also, I assume we're solving for y given y'?
     
  4. Sep 27, 2012 #3
    I already got it. Sorry for bothering you guys. My problem was that I forgot to differentiate -theta in 3^(-theta).

    The final answer I have is -2*3^(-θ)ln(3)
     
  5. Sep 27, 2012 #4
    That ln(3) should be in the denominator I think.
     
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