Equation Icon  (0) ∫ t ′ ′ ′ ˆO(t) = ˆO (t) + dt χOF (t − t )ˆx(t), ∫t0 ˆ ˆ (0) t ′ ′ ′ F(t) = F (t) + dt χF F(t − t )ˆx(t), ∫t0t [ ] (0) ′ ′ ′ ˆ ′ ˆx(t) = ˆx (t) + t dtχxx (t − t ) G (t) + F (t) , (129 ) 0