3) For the following system find the total response. Use: $m_1 = 2$ kg, $m_2 = 6$ kg, $m_3 = 4$ kg, $k_1 = 5$ N/m, $k_2 = 12$ N/m, $k_3 = 5$ N/m, $k_4 = 6$ N/m.
$x_1(t)$
$x_2(t)$
$x_3(t)$
$k_1$
$k_2$
$k_3$
$k_4$
$m_1$
$m_2$
$m_3$
$F_1 = -sin(1.5t) + 3cos(1.5t)$
$F_2 = 3sin(6t)$
$F_3 = 2sin(1.5t) + 8cos(1.5t)$