y(t)=y1(t) =-tfrac14cos t +tfrac14sin t +tfrac14e^-tcos(raiz2,t) +1raiz2e^-tsin(raiz2,t),
e para t>=pi,
y(t)=y1(t)+h(t-pi)
=l[-tfrac14cos t +tfrac14sin t +tfrac14e^-tcos(raiz2,t) +tfrac1raiz2e^-tsin(raiz2,t)r] ;+;upi(t),l[-tfrac14cos(t-pi)+tfrac14sin(t-pi) +tfrac14e^-(t-pi)cos(raiz2,(t-pi))r]
Resposta
Para 0<= t<pi,
y(t) =-tfrac14cos t +tfrac14sin t +tfrac14e^-tcos(raiz2,t) +1raiz2e^-tsin(raiz2,t)
Para t>=pi,
y(t) =-tfrac14cos t +tfrac14sin t +tfrac14e^-tcos(raiz2,t) +1raiz2e^-tsin(raiz2,t) -tfrac14cos(t-pi)+tfrac14sin(t-pi) +tfrac14e^-(t-pi)cos(raiz2,(t-pi))