Find the relative extrema of the function and classify each as a maximum or minimum. (Use either the first or second derivative test). f(x) = x 3 - 12x - 4

Calculus: Early Transcendentals
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Author:James Stewart
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Chapter1: Functions And Models
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Problem 1RCC: (a) What is a function? What are its domain and range? (b) What is the graph of a function? (c) How...
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### Finding Relative Extrema

To determine the relative extrema of the function and classify each as a maximum or minimum, follow these instructions. (You may use either the first or second derivative test.)

Given function:
\[ f(x) = x^3 - 12x - 4 \]

1. **Find the first derivative, \( f'(x) \)**:
   Differentiate the function with respect to \( x \) to find the first derivative.

2. **Find critical points**:
   Set the first derivative equal to zero and solve for \( x \):
   \( f'(x) = 0 \).

3. **Classify the critical points**:
   Utilize either the first derivative test or the second derivative test:
   - **First Derivative Test**: Analyze the sign changes of \( f'(x) \) around the critical points.
   - **Second Derivative Test**: Find the second derivative \( f''(x) \). Determine the concavity at each critical point by evaluating \( f''(x) \).

Make sure to classify the extrema appropriately as either a maximum or minimum based on the results of these tests.
Transcribed Image Text:### Finding Relative Extrema To determine the relative extrema of the function and classify each as a maximum or minimum, follow these instructions. (You may use either the first or second derivative test.) Given function: \[ f(x) = x^3 - 12x - 4 \] 1. **Find the first derivative, \( f'(x) \)**: Differentiate the function with respect to \( x \) to find the first derivative. 2. **Find critical points**: Set the first derivative equal to zero and solve for \( x \): \( f'(x) = 0 \). 3. **Classify the critical points**: Utilize either the first derivative test or the second derivative test: - **First Derivative Test**: Analyze the sign changes of \( f'(x) \) around the critical points. - **Second Derivative Test**: Find the second derivative \( f''(x) \). Determine the concavity at each critical point by evaluating \( f''(x) \). Make sure to classify the extrema appropriately as either a maximum or minimum based on the results of these tests.
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