For the function given below use the first and second derivatives to identify the intervals of monotonicity (increasing/decreasing), relative extrema, intervals of concavity, and inflection points. f (x) = 2x3 + 3.x2 - 7 %3D

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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**Problem Statement:**

For the function given below, use the first and second derivatives to identify the intervals of monotonicity (increasing/decreasing), relative extrema, intervals of concavity, and inflection points.

\[ f(x) = 2x^3 + 3x^2 - 7 \]

**Solution Approach:**

1. **First Derivative Analysis**: 
   - Find \( f'(x) \) to determine intervals of increasing and decreasing behavior of the function.

2. **Critical Points and Relative Extrema**: 
   - Identify the critical points by setting \( f'(x) = 0 \) and solving for \( x \). Use these points to find relative maxima and minima.
   
3. **Second Derivative Analysis**: 
   - Calculate \( f''(x) \) to analyze concavity and find inflection points.

4. **Intervals of Concavity**: 
   - Determine where \( f''(x) > 0 \) (concave up) and where \( f''(x) < 0 \) (concave down).

5. **Inflection Points**: 
   - Identify points where \( f''(x) = 0 \) and a change in concavity occurs.

By using these steps, you can comprehensively understand the behavior of the function \( f(x) = 2x^3 + 3x^2 - 7 \).
Transcribed Image Text:**Problem Statement:** For the function given below, use the first and second derivatives to identify the intervals of monotonicity (increasing/decreasing), relative extrema, intervals of concavity, and inflection points. \[ f(x) = 2x^3 + 3x^2 - 7 \] **Solution Approach:** 1. **First Derivative Analysis**: - Find \( f'(x) \) to determine intervals of increasing and decreasing behavior of the function. 2. **Critical Points and Relative Extrema**: - Identify the critical points by setting \( f'(x) = 0 \) and solving for \( x \). Use these points to find relative maxima and minima. 3. **Second Derivative Analysis**: - Calculate \( f''(x) \) to analyze concavity and find inflection points. 4. **Intervals of Concavity**: - Determine where \( f''(x) > 0 \) (concave up) and where \( f''(x) < 0 \) (concave down). 5. **Inflection Points**: - Identify points where \( f''(x) = 0 \) and a change in concavity occurs. By using these steps, you can comprehensively understand the behavior of the function \( f(x) = 2x^3 + 3x^2 - 7 \).
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