How to write this logarithmic equation as a power

1. Sep 24, 2005

brandon26

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. Sep 24, 2005

mantito

1) ln(a)=x means a=exp(x)
2) exp(x+y)=exp(x)*exp(y)

3. Sep 24, 2005

brandon26

yes, but that doesnt help me?

4. Sep 24, 2005

mantito

1)lny=3+0.2x => y=exp(3+0.2x). Now you do the 2).

5. Sep 24, 2005

brandon26

Oh right. Thank you. I got y=exp(3) * exp (0.2x).
That becomes y = exp(3+0.6) * exp(x)

6. Sep 24, 2005

brandon26

Sorry that is wrong

7. Sep 24, 2005

brandon26

y = exp(0.2)x + exp(3). is that right?

8. Sep 24, 2005

mantito

sorry, i forgot this one:)
3)a^(b*c)=(a^b)^c

Last edited: Sep 24, 2005