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Homework Help: How to write this logarithmic equation as a power

  1. Sep 24, 2005 #1
    how can the relationship between y and x in the form Iny = 3+0.2x, be written in the form y = pq^x.

    I tried many ways, but cant find the righ format, someone help please?
     
  2. jcsd
  3. Sep 24, 2005 #2
    1) ln(a)=x means a=exp(x)
    2) exp(x+y)=exp(x)*exp(y)
     
  4. Sep 24, 2005 #3
    yes, but that doesnt help me? :confused:
     
  5. Sep 24, 2005 #4
    1)lny=3+0.2x => y=exp(3+0.2x). Now you do the 2).
     
  6. Sep 24, 2005 #5
    Oh right. Thank you. I got y=exp(3) * exp (0.2x).
    That becomes y = exp(3+0.6) * exp(x)
     
  7. Sep 24, 2005 #6
    Sorry that is wrong
     
  8. Sep 24, 2005 #7
    y = exp(0.2)x + exp(3). is that right?
     
  9. Sep 24, 2005 #8
    sorry, i forgot this one:)
    3)a^(b*c)=(a^b)^c
     
    Last edited: Sep 24, 2005
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