- Mon Mar 04, 2013 11:03 pm
- Forum: Intermediate Algebra
- Topic: Exponential decay/half-life
- Replies:
**2** - Views:
**3748**

Ok, I think I understand now that there's an "r" in both the equations... y=a(1+r)^t and y=ae^(rt) and the "r" in each equation represents the growth/decay rate, but the first one is annual (or other fixed period) and the other is continuous, and they're not exactly the same function. Is that right?...

- Mon Mar 04, 2013 7:39 pm
- Forum: Intermediate Algebra
- Topic: Exponential decay/half-life
- Replies:
**2** - Views:
**3748**

Hi, I have a general question about whether you can usually use either formula, A(t) = Ae^(kt), or A(t) = Ab^t, in exponential decay (half-life) word problems, or if there is some difference in where each of these formulas is applicable. I'm used to using A(t) = Ae^(kt) for everything, but I saw som...