Let $T$ be a continuous non-negative random variable with cumulative hazard function $H(·)$. Prove $H(T)$ has an exponential distribution with mean one.
Completely lost at this point.
This should help:

Let $T$ be a continuous non-negative random variable with cumulative hazard function $H(·)$. Prove $H(T)$ has an exponential distribution with mean one.
Completely lost at this point.
This should help:

I think I got it, please comment if you think this is correct.
-Thank you