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4.0 DIFFERENTIAL EQUATION METHOD






               4.1 SOLVE DIFFERENTIAL EQUATIONS USING LAPLACE

                                                  TRANSFORM


        The Laplace transform is a powerful integral transform used to switch a function from
        the time domain to the s-domain. The Laplace transform can be used in some cases
        to solve linear differential equations with given initial conditions.


        4.1.1 Table of  Laplace Transform


        First consider the following property of the Laplace transform:


                                     Table of  Laplace Transform

                             F(s)                                      F(t),  t> 0

                                                                    First  Derivative
                            sY (s ) −   ) 0 ( y                           dy
                                                                    y ( t),
                                                                      '
                                                                          dt
                                                                   Second  Derivative
                        s 2 Y  ) (s − sy  ) 0 ( −  '  ) 0 ( y      y  ' ' (t ), d  2 y

                                                                         dt  2
























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