This is on page 32 of Rudin's Real and Complex Analysis, 3rd Edition:
Suppose $\mu$ is a positive measure on $X$, $f: X \rightarrow [0, \infty]$ is measurable, $\int_X f d\mu = c$, where $0
The hint says "if $\alpha \geq 1$, the integrands are dominated by $\alpha f$". But why?
Thanks a lot.