Thread: integral by time, can you help me?

hi ,

i want to integrate this, by time:



how can this integrate short?

and can you say me some links about partial differential equations(like hamilton-jacobi in physic, non-linear etc..) i think some text books, or online tutorials, by that themes, and theme "integrate,derive by time."

thanks for you help,

In let
In let .

i dont understand the following step (maybe its false?),

Originally Posted by ThePerfectHacker

could you write it a bit detailed?

but thanks for your help,

I added an subtracted the same quantity. Thereby not chaning the value of the integral at all.