Advanced Engineering Mathematics
Advanced Engineering Mathematics
10th Edition
ISBN: 9780470458365
Author: Erwin Kreyszig
Publisher: Wiley, John & Sons, Incorporated
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**Educational Content on Derivatives and Graph Analysis**

**Understanding Graphs: Position, Velocity, and Acceleration**

The image presents three graphs representing a position function, \( s(t) \), a velocity function, \( v(t) \), and an acceleration function, \( a(t) \), each as a function of time, \( t \). You are required to estimate the \( x \) values to 1 decimal place.

**Graph Descriptions**:
- **Graph S**: Red curve
- **Graph L**: Blue curve
- **Graph D**: Dotted curve

**Tasks and Questions**:

(a) **Intervals where Graph L is increasing**:
   To determine these intervals, observe where the slope of Graph L is positive.

(b) **Graph with decreasing slopes for \( x < 1 \)**:
   Identify the graph where the slope becomes less positive or more negative as \( x \) decreases below 1.

(c) **Graph with always positive second derivative**:
   A positive second derivative indicates that the graph is concave up. Determine which graph maintains this property across its entire domain.

(d) **Intervals where Graph S is concave down**:
   A graph is concave down when its second derivative is negative. Identify the segments of Graph S where this condition holds.

(e) **Intervals where Graph S's second derivative is negative**:
   This is a similar analysis to part (d), focusing on the negativity of the second derivative specifically for Graph S.

By carefully analyzing these graphs, one can leverage first and second derivatives to describe functional behaviors, such as intervals of increase/decrease, concavity, and extreme values.
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Transcribed Image Text:**Educational Content on Derivatives and Graph Analysis** **Understanding Graphs: Position, Velocity, and Acceleration** The image presents three graphs representing a position function, \( s(t) \), a velocity function, \( v(t) \), and an acceleration function, \( a(t) \), each as a function of time, \( t \). You are required to estimate the \( x \) values to 1 decimal place. **Graph Descriptions**: - **Graph S**: Red curve - **Graph L**: Blue curve - **Graph D**: Dotted curve **Tasks and Questions**: (a) **Intervals where Graph L is increasing**: To determine these intervals, observe where the slope of Graph L is positive. (b) **Graph with decreasing slopes for \( x < 1 \)**: Identify the graph where the slope becomes less positive or more negative as \( x \) decreases below 1. (c) **Graph with always positive second derivative**: A positive second derivative indicates that the graph is concave up. Determine which graph maintains this property across its entire domain. (d) **Intervals where Graph S is concave down**: A graph is concave down when its second derivative is negative. Identify the segments of Graph S where this condition holds. (e) **Intervals where Graph S's second derivative is negative**: This is a similar analysis to part (d), focusing on the negativity of the second derivative specifically for Graph S. By carefully analyzing these graphs, one can leverage first and second derivatives to describe functional behaviors, such as intervals of increase/decrease, concavity, and extreme values.
Expert Solution
Check Mark
Step 1: Part a

Observe the graph L increased upto x=1, then decreased up to x=1.5 and thereafter again increases.

Therefore, the graph L increases open parentheses negative infinity comma 1 close parentheses union open parentheses 1 comma infinity close parentheses.

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