IMPLEMENT SUBSTITUTION

[ppal]

I tried using symbolic to implement without success. Any hints on how I can implement this. and later use Laplace transformation?

[Cornel]

This like substitution seems to not work in this case:

Only manually if you make the substitution,..

[-MFra-]

With the "substitute" operator you can do this for example:

[Werner_E]

It seems to work defining an intermediate function for the derivative

[Werner_E · Accepted solution]

I added units and played around with Prime 9 new symbolic ODE solver.

It is not able to give a solution for a generic function E(t) but we have to define E(t) before we solve.

Nice, nonetheless.