Question

Please help I am stuck
Use part I of the Fundamental Theorem of Calculus to find the derivative of
the integral from 4x to 5x of (u+5/u-1)du
I will also show this as an equation below

Answer 1

\[\int\limits_{4x}^{5x}\frac{u+5 }{ u-1 }du\]

Answer 2

So far I know that I can separate this into two different integrals
\[\int\limits_{0}^{5x}\frac{ u+5 }{ u-1}du -\int\limits_{0}^{4x}\frac{ u+5 }{ u-1 }\]