Show that for −1 ≤ x ≤ 1 . This is for Calculus 2. Including steps…

Show that
for −1 ≤ x ≤ 1 .

This is for Calculus 2. Including steps would be wonderful and
any help would be nice.
We were unable to transcribe this imageShow that aretan(e) = ] 1–1″ (***) for –15151. Show that arctan: for -1