Question

Question #92499

Answer 1

Range: `f(x) in (-oo,+oo)`

Explanation:

Note that `f(x)` is not defined at `x=1`

However
`color(white)("XXX")`As `xrarr1^-`
`color(white)("XXXXXX")f(x)rarr -oo`
and
`color(white)("XXX")`As `xrarr1^+`
`color(white)("XXXXXX")f(x)rarr +oo`