If $A = \{a, b, c, d\}$ and the function $f = \{(a, b), (b, d), (c, a), (d, c)\}$, write $f^{-1}$.
Answer & explanation
Correct answer: option 2
The correct answer is Option (2) → $f^{-1} = \{(b, a), (d, b), (a, c), (c, d)\}$ ##
Given that,
$A = \{a, b, c, d\}$
and
$f = \{(a, b), (b, d), (c, a), (d, c)\}$
$∴f^{-1} = \{(b, a), (d, b), (a, c), (c, d)\}$