Lesson 27.1 - Extra Practice Solving IVPs Containing Dirac Delta Functions

  1. Solve the IVP: y″+2y′−3y=δ(t−1)−δ(t−2); y(0)=2, y′(0)=−2

  2. Solve the IVP: y″+6y′+5y=etδ(t−2); y(0)=0, y′(0)=4

  3. A mass attached to a spring is released from rest 1 m below equilibrium positions from the mass spring system and begins to vibrate. After π seconds, the mass is struck by a hammer exerting an impulse on the mass. This is modeled by following the IVP:

y″+9y=3δ(t−π); y(0)=1, y′(0)=0

Find y(t) where y(t) is the displacement of the mass at any time t.

Next Lesson: Lesson 28 - Solving Linear Systems with Laplace Transforms

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