**Learning objectives**

- Discuss the equation
- Solutions form 2D vector space
- Unique solution when and are specified.

- Solve constant coefficient equations
- Develop computational facility with complex numbers and exponentials
- Explore solutions of the driven equation
- frequency response of damped harmonic oscillator

**Before Class**

- Browse Borelli-Coleman 3.1-3.4.
- Oscillations notes
- Linear second order theory: uniqueness notes

**In class**

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