- #1
Slimsta
- 190
- 0
Homework Statement
Find three independent solutions to the differential equation
[itex]\frac{d^3}{dt^3}[/itex]f(t) + f(t) = 0
You should use complex exponentials to derive the solutions, but express the results in real
form.
Homework Equations
[itex]sin\theta = \frac{e^{i\theta} - e^{-i\theta}}{2i}[/itex]
[itex]cos\theta = \frac{e^{i\theta} + e^{-i\theta}}{2}[/itex]
The Attempt at a Solution
I'm not entirely sure what to do.. please help
I copy notes in class, tried to read the chapter but I don't see anything that helps me get the question