Question

can someone help me with this?

Answer 1

Let \[f(x)\] be a twice differential function (ie f'(x) and f"(x) exist) such that \[f(4)=0\], \[f(5)=2\], \[f \prime(4)=4\], \[f \prime(5)=0\] Evaluate the integral by parts

Answer 2

where is the integral ?

Answer 3

\[\int\limits_{4}^{5}xf \prime \prime(x)dx\]

Answer 4

\[uv'+vu'=(uv)'\\
∫udv+∫vdu=uv\\
\boxed{\large {∫udv=uv\big|-∫vdu}}\]

Answer 5

@mathslover

Answer 6

Sorry heradog, not able to help you :( @UnkleRhaukus is the one who can help very nicely in integrals :)

Answer 7

ok maybe @UnkleRhaukus thought I understood what he put down but I'm not sure if I have the concept well enough to have used just that to find the right answer