Solution:

Here,

f = {(2,\(\frac12\)),(3,\(\frac13\)),(4,\(\frac14\))}

Range = { \(\frac12\), \(\frac13\), \(\frac14\)}

Inverse function (f^{-1}) = {(\(\frac12\),2),(\(\frac13\),3),(\(\frac14\),4)} is the required answer

Note: Inverse of the function is x and y reversed