- #1
cjurban
- 7
- 0
In my physics class we're talking about LC and LRC circuits, and the equations are analogous to those for SHM. However, I don't see how x=Acos(ωt+[itex]\varphi[/itex]) satisfies m(d^2x/dt^2)+(k/m)x=0. I've never done differential equations and in the book it seemed like the author just guessed and checked until he found the right solution, and this doesn't seem like a satisfactory answer. How did he solve this equation?