Answer:
[tex]f'(n) = n + 3[/tex]
Step-by-step explanation:
Given
[tex]f(n) = n - 3[/tex]
Required
The inverse
[tex]f(n) = n - 3[/tex]
Replace f(n) with y
[tex]y = n - 3[/tex]
Swap positions of y and n
[tex]n = y - 3[/tex]
Make y the subject
[tex]y = n + 3[/tex]
Replace y with f'(n)
[tex]f'(n) = n + 3[/tex]
