Math Problem Statement
Assume that the function
𝑓
is a one-to-one function.
(a) If
𝑓
(
8
)
=
4
, find
𝑓
1
(
4
)
.
Your answer is
(b) If
𝑓
1
(
9
)
=
9
, find
𝑓
(
9
)
.
Your answer is
Solution
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Math Problem Analysis
Mathematical Concepts
Functions
Inverse Functions
One-to-One Functions
Formulas
For a one-to-one function f, f^{-1}(f(x)) = x and f(f^{-1}(y)) = y.
Theorems
Inverse Function Theorem: The function f^{-1} undoes the effect of the function f.
Suitable Grade Level
Grades 9-11