Table of contents
- 0. Review of Algebra4h 16m
- 1. Equations & Inequalities3h 18m
- 2. Graphs of Equations43m
- 3. Functions2h 17m
- 4. Polynomial Functions1h 44m
- 5. Rational Functions1h 23m
- 6. Exponential & Logarithmic Functions2h 28m
- 7. Systems of Equations & Matrices4h 6m
- 8. Conic Sections2h 23m
- 9. Sequences, Series, & Induction1h 19m
- 10. Combinatorics & Probability1h 45m
3. Functions
Function Composition
2:29 minutes
Problem 17b
Textbook Question
Textbook QuestionFind the inverse of f(x) = x^3 + 2
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Inverse Functions
An inverse function essentially reverses the effect of the original function. For a function f(x), its inverse, denoted as f⁻¹(x), satisfies the condition f(f⁻¹(x)) = x for all x in the domain of f⁻¹. Understanding how to find an inverse function is crucial for solving problems that require reversing operations.
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Algebraic Manipulation
Algebraic manipulation involves rearranging and simplifying expressions to isolate variables. In finding the inverse of a function, one typically swaps the roles of x and y, then solves for y. Mastery of algebraic techniques, such as factoring, expanding, and using properties of equality, is essential for successfully deriving the inverse.
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Cubic Functions
Cubic functions are polynomial functions of degree three, characterized by their general form f(x) = ax³ + bx² + cx + d. They can exhibit unique properties such as having one or three real roots. Understanding the behavior of cubic functions, including their increasing and decreasing intervals, is important when determining their inverses, as it affects the function's one-to-one nature.
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