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
Intro to Functions & Their Graphs
1:30 minutes
Problem 86a
Textbook Question
Textbook QuestionUse the graphs of f and g to solve Exercises 83–90.
Find(g/f)(3)
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Function Notation
Function notation is a way to represent functions in mathematics, typically using symbols like f(x) and g(x). Here, f and g are functions, and x is the input variable. Understanding function notation is crucial for interpreting and manipulating functions, especially when performing operations like addition, subtraction, multiplication, or division.
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Graph Interpretation
Interpreting graphs involves analyzing the visual representation of functions to extract information about their behavior. In this case, the graphs of f(x) and g(x) provide insights into their values at specific points, such as x = 3. This skill is essential for solving problems that require evaluating functions based on their graphical representations.
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Division of Functions
The division of functions, denoted as (g/f)(x), represents the quotient of two functions g(x) and f(x). To find (g/f)(3), one must evaluate g(3) and f(3) from their respective graphs and then compute the ratio g(3)/f(3). Understanding how to perform operations on functions is fundamental in algebra, particularly when dealing with composite or rational functions.
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