Auxiliary equations with complex roots, for 2nd order linear differential equations

We will solve a second-order differential equation y''+6y'+10y=0 whose characteristic equation (i.e. auxiliary equation) has complex roots. Check out Euler Formula:    • Euler’s identity proof for calculus 2 stud...   Check out my differential equation playlists for more lessons and tutorials: https://www.youtube.com/@blackpenredp... 🍎 Support me on patron   / blackpenredpen   #differentialequation #math #blackpenredpen