Question

f={(1,5),(2,9),(5,21)} Form the inverse function f-1

Answer 1

given (a,b), then (b,a) is the inverse

Answer 2

Oh, so when it's asking for the inverse function f-1, all it's asking for is the inverse?

Answer 3

That threw me off.

Answer 4

Thank you!

Answer 5

\(\large \begin{array}{llll}
f=\{&(1,5),(2,9),(5,21)\}
\\ \quad \\
f^{-1}=\{&(5,1),(9,2),(21,5)\}
\end{array}\)

as pointed out by sourwing

Answer 6

Ahh, yes, thank you!

Answer 7

yw