Solución

a(t)=e5t(sent5cost)5e5t(cost5sent),e5t(cost5sent)+5e5t(sent+5cost),100e5t\bold{a}(t) = \big\lang e^{-5t}(-sent-5cost) - 5e^{-5t}(cost- 5sent), -e^{-5t}(cost-5sent) + 5e^{-5t}(sent + 5 cost), 100e^{-5t}\big\rang