I'm required to prove that:
The furthest I can get is this:
I have no idea what to do Any kind of nudge in the right direction would be greatly appreciated.
Incorrect.
The notation does NOT mean . It stands for the inverse hyperbolic sine function.
It's the same sort of notation used in trigonometric functions to show the inverse trigonometric functions. E.g. implies .
Suppose you had
.
Its inverse function is
(in other words, )
.
Therefore .