Let ƒ(x)=-3x+4 and g(x)=-x^2+4x+1. Find each of the following. Simplify if necessary. See Example 6. g(-2)
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- 2. Graphs of Equations1h 43m
- 3. Functions2h 17m
- 4. Polynomial Functions1h 44m
- 5. Rational Functions1h 23m
- 6. Exponential & Logarithmic Functions2h 28m
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- 10. Combinatorics & Probability1h 45m
3. Functions
Intro to Functions & Their Graphs
Problem 58
Textbook Question
Let 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)
Verified step by step guidance1
Identify the function g(x) given as \(g(x) = -x^{2} + 4x + 1\).
To find \(g\left(-\frac{1}{4}\right)\), substitute \(x = -\frac{1}{4}\) into the function \(g(x)\).
Calculate each term separately: first, compute \(-\left(-\frac{1}{4}\right)^{2}\), then compute \$4 \times \left(-\frac{1}{4}\right)\(, and finally add the constant term \)1$.
Combine all the results from the previous step carefully, paying attention to signs and fractions.
Simplify the expression to get the final value of \(g\left(-\frac{1}{4}\right)\).
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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 given input value into the function's formula and simplifying to find the output. For example, to find g(-1/4), replace every x in g(x) with -1/4 and simplify the expression.
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Evaluating Composed Functions
Polynomial Functions
Polynomial functions are expressions involving variables raised to whole-number exponents combined using addition, subtraction, and multiplication. Understanding how to handle terms like -x^2 and 4x is essential for correctly evaluating and simplifying the function.
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Introduction to Polynomial Functions
Simplification of Algebraic Expressions
Simplification involves performing arithmetic operations and combining like terms to write expressions in their simplest form. This includes handling fractions, exponents, and negative signs carefully to ensure the final answer is accurate and clear.
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Introduction to Algebraic Expressions
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