Oneiromancy
New member
- Joined
- Sep 28, 2007
- Messages
- 21
Solving a simple differential equation like dy/dt + (2ty) = 0, we end up with y = e^(-t^2) * e^c. If we rename e^c = A, wouldn't A only have the range of values A > 0? My book keeps saying "A can be negative, 0, or positive."