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
3:08 minutes
Problem 58`
Textbook Question
Textbook QuestionLet ƒ(x)=-3x+4 and g(x)=-x^2+4x+1. Find each of the following. Simplify if necessary. See Example 6. g(-1/4)
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Key Concepts
Here are the essential concepts you must grasp in order to answer the question correctly.
Function Evaluation
Function evaluation involves substituting a specific input value into a function to determine its output. For example, to find g(-1/4), you replace x in the function g(x) with -1/4 and simplify the expression to find the corresponding output value.
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Quadratic Functions
A quadratic function is a polynomial function of degree two, typically expressed in the form g(x) = ax^2 + bx + c. The graph of a quadratic function is a parabola, which can open upwards or downwards depending on the sign of the leading coefficient (a). Understanding the structure of quadratic functions is essential for evaluating them at specific points.
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Simplification of Expressions
Simplification involves reducing an expression to its simplest form by combining like terms, factoring, or performing arithmetic operations. In the context of evaluating g(-1/4), simplification may include calculating the value of the expression step-by-step to ensure clarity and accuracy in the final result.
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