Question

an explanation please:

Answer 1

given: \[U(x) = - \int\limits F(x) dx + C\] find F(x).
according to my book it should be done this way but I dont understand the logic behind it.
\[\frac{ d }{ dx }\int\limits F(x) dx = F(x)\]

\[F(x) = - \frac{ dU(x) }{ dx }\]

Answer 2

@Loser66