






The first case occurs in

for

and

. Extending the domain to account for all real

, we have this happening for

and

, where

.
The second case occurs in

when

, and extending to all reals we have

for

, i.e. any even multiple of

.
I got the second one done, I️ just need to know the formula for recursive and explicit formula
Rise over run would be a thing to start with since you use graphs<span />