# Integral of the derivative

In 11.3.0 for Microsoft Windows (64-bit) (March 7, 2018) writing:

Integrate[D[x*Sqrt[f[x]], x], x]


I would expect:

x*Sqrt[f[x]]

• Integrate internal code simply fails to recognize that the integrand is an exact derivative. – Daniel Lichtblau Jan 10 at 22:36