3.4.1 Mathematical representation of linear systems 3. Differentiation x(t)→y(t) dx(t)、d(t then 4. Integration fx()->y(t) and for a zero initial condition of the system then x()→y(h3. Differentiation If then 4. Integration If and for a zero initial condition of the system, then 3.4.1 Mathematical representation of linear systems x(t)→ y(t) ( ) ( ) dt dy t dt dx t → (3.6) x(t)→ y(t) ( ) ( )  →  t t x t dt y t dt 0 0 (3.7)