Calculus: Early Transcendentals
8th Edition
ISBN:9781285741550
Author:James Stewart
Publisher:James Stewart
Chapter1: Functions And Models
Section: Chapter Questions
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 18: Vector Function Analysis**
**Given:**
The vector function \(\vec{r}(t) = \langle \sin t, t, \cos t \rangle\)
**Task:**
Determine the relevant properties or solve for the specific requirement of the vector function given in the problem statement.
---
### Explanation:
This problem presents a vector function \(\vec{r}(t)\) in terms of the parameter \(t\), with components including trigonometric functions sine and cosine, as well as a linear component. The vector is expressed in three-dimensional space with the components: \(\sin t\), \(t\), and \(\cos t\).
Key points to consider when solving or analyzing this vector function might include:
1. **Magnitude of the Vector:**
Calculate \(|\vec{r}(t)|\) using the formula:
\[
|\vec{r}(t)| = \sqrt{(\sin t)^2 + t^2 + (\cos t)^2}
\]
2. **Direction of the Vector:**
Determine the direction by looking at unit vectors or normalizing the vector function.
3. **Curvature and Motion Analysis:**
Assess the path described by \(\vec{r}(t)\). Since it includes both linear and trigonometric components, expect a helicoidal or spiral path due to the combination of linear \(t\) with rotational components \(\sin t\) and \(\cos t\).
4. **Differentiation:**
Differentiate \(\vec{r}(t)\) to find velocity \(\vec{v}(t)\) and acceleration \(\vec{a}(t)\):
\[
\vec{v}(t) = \left\langle \frac{d}{dt}(\sin t), \frac{d}{dt}(t), \frac{d}{dt}(\cos t) \right\rangle
\]
\[
\vec{a}(t) = \frac{d}{dt}\vec{v}(t)
\]
5. **Graphical Representation (if applicable):**
Although not provided in the given image, visualize the motion in three dimensions as a curve demonstrating both periodic (due to trigonometric functions) and linear attributes.
By exploring these elements, users can gain a comprehensive understanding of the properties of vector functions, particularly](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2Fa01c18cd-a3eb-4112-9efe-7c93aae07195%2Fbfa505d8-e064-411e-80b5-3d51f4395b7f%2F0mmlstp_processed.png&w=3840&q=75)
Transcribed Image Text:**Problem 18: Vector Function Analysis**
**Given:**
The vector function \(\vec{r}(t) = \langle \sin t, t, \cos t \rangle\)
**Task:**
Determine the relevant properties or solve for the specific requirement of the vector function given in the problem statement.
---
### Explanation:
This problem presents a vector function \(\vec{r}(t)\) in terms of the parameter \(t\), with components including trigonometric functions sine and cosine, as well as a linear component. The vector is expressed in three-dimensional space with the components: \(\sin t\), \(t\), and \(\cos t\).
Key points to consider when solving or analyzing this vector function might include:
1. **Magnitude of the Vector:**
Calculate \(|\vec{r}(t)|\) using the formula:
\[
|\vec{r}(t)| = \sqrt{(\sin t)^2 + t^2 + (\cos t)^2}
\]
2. **Direction of the Vector:**
Determine the direction by looking at unit vectors or normalizing the vector function.
3. **Curvature and Motion Analysis:**
Assess the path described by \(\vec{r}(t)\). Since it includes both linear and trigonometric components, expect a helicoidal or spiral path due to the combination of linear \(t\) with rotational components \(\sin t\) and \(\cos t\).
4. **Differentiation:**
Differentiate \(\vec{r}(t)\) to find velocity \(\vec{v}(t)\) and acceleration \(\vec{a}(t)\):
\[
\vec{v}(t) = \left\langle \frac{d}{dt}(\sin t), \frac{d}{dt}(t), \frac{d}{dt}(\cos t) \right\rangle
\]
\[
\vec{a}(t) = \frac{d}{dt}\vec{v}(t)
\]
5. **Graphical Representation (if applicable):**
Although not provided in the given image, visualize the motion in three dimensions as a curve demonstrating both periodic (due to trigonometric functions) and linear attributes.
By exploring these elements, users can gain a comprehensive understanding of the properties of vector functions, particularly

Transcribed Image Text:h. \( \left\| \vec{v}(0) \right\| \)
This notation represents the magnitude or norm of a vector \(\vec{v}(0)\) at time \(t = 0\). In mathematical terms, the double vertical lines \( \left\| \cdot \right\| \) denote the norm of a vector, which is a scalar value representing the vector's length or magnitude. It's commonly used in physics and engineering to assess the size of a vector in various applications.
Expert Solution

Step 1
Given:
We have to find :
To get :
Differentiate with respect to t :
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