3. Find the divergence of U3 -e3 U1U2 U1 U2 -ēj + e2 + F 2uzu3 U3 if hi = U1U2, h3 = Uz. = U1, h2
3. Find the divergence of U3 -e3 U1U2 U1 U2 -ēj + e2 + F 2uzu3 U3 if hi = U1U2, h3 = Uz. = U1, h2
Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
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Please help with the following solution. This is
![3. Find the divergence of
\[
\mathbf{F} = \frac{u_1}{2u_2u_3}\mathbf{e_1} + \frac{u_2}{u_3}\mathbf{e_2} + \frac{u_3}{u_1u_2}\mathbf{e_3}
\]
if
\[
h_1 = u_1, \quad h_2 = u_1u_2, \quad h_3 = u_3.
\]](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F1345a87f-3d4a-45ee-a13b-cb772771cc65%2F22b320cd-85cd-4a64-a248-4003e91b401b%2F0canv7_processed.png&w=3840&q=75)
Transcribed Image Text:3. Find the divergence of
\[
\mathbf{F} = \frac{u_1}{2u_2u_3}\mathbf{e_1} + \frac{u_2}{u_3}\mathbf{e_2} + \frac{u_3}{u_1u_2}\mathbf{e_3}
\]
if
\[
h_1 = u_1, \quad h_2 = u_1u_2, \quad h_3 = u_3.
\]
![**Mathematical Formulas for Divergence, Curl, and Laplacian**
### Divergence
The divergence of a vector field \( \mathbf{F} \) is given by:
\[
\nabla \cdot \mathbf{F} = \frac{1}{h_1 h_2 h_3} \left[ \frac{\partial}{\partial u_1}(F_1 h_2 h_3) + \frac{\partial}{\partial u_2}(F_2 h_1 h_3) + \frac{\partial}{\partial u_3}(F_3 h_1 h_2) \right]
\]
### Curl
The curl of a vector field \( \mathbf{F} \) is represented as:
\[
\nabla \times \mathbf{F} = \frac{1}{h_1 h_2 h_3}
\begin{vmatrix}
\mathbf{i} & \mathbf{j} & \mathbf{k} \\
h_1 e_1 & h_2 e_2 & h_3 e_3 \\
\frac{\partial}{\partial u_1} & \frac{\partial}{\partial u_2} & \frac{\partial}{\partial u_3} \\
F_1 h_1 & F_2 h_2 & F_3 h_3
\end{vmatrix}
\]
### Laplacian
The Laplacian of a scalar function \( f \) is expressed as:
\[
\nabla^2 f = \frac{1}{h_1 h_2 h_3} \left[
\frac{\partial}{\partial u_1}\left(\frac{h_2 h_3}{h_1} \frac{\partial f}{\partial u_1}\right) +
\frac{\partial}{\partial u_2}\left(\frac{h_3 h_1}{h_2} \frac{\partial f}{\partial u_2}\right) +
\frac{\partial}{\partial u_3}\left(\frac{h_1 h_2}{h_3} \frac{\partial f}{\partial u_3}\right)
\right]
\]
---
### Cylindrical Coordinates
- **Displacement Vector**: \( d\mathbf{R} = dp \, e](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F1345a87f-3d4a-45ee-a13b-cb772771cc65%2F22b320cd-85cd-4a64-a248-4003e91b401b%2F56v8mue_processed.png&w=3840&q=75)
Transcribed Image Text:**Mathematical Formulas for Divergence, Curl, and Laplacian**
### Divergence
The divergence of a vector field \( \mathbf{F} \) is given by:
\[
\nabla \cdot \mathbf{F} = \frac{1}{h_1 h_2 h_3} \left[ \frac{\partial}{\partial u_1}(F_1 h_2 h_3) + \frac{\partial}{\partial u_2}(F_2 h_1 h_3) + \frac{\partial}{\partial u_3}(F_3 h_1 h_2) \right]
\]
### Curl
The curl of a vector field \( \mathbf{F} \) is represented as:
\[
\nabla \times \mathbf{F} = \frac{1}{h_1 h_2 h_3}
\begin{vmatrix}
\mathbf{i} & \mathbf{j} & \mathbf{k} \\
h_1 e_1 & h_2 e_2 & h_3 e_3 \\
\frac{\partial}{\partial u_1} & \frac{\partial}{\partial u_2} & \frac{\partial}{\partial u_3} \\
F_1 h_1 & F_2 h_2 & F_3 h_3
\end{vmatrix}
\]
### Laplacian
The Laplacian of a scalar function \( f \) is expressed as:
\[
\nabla^2 f = \frac{1}{h_1 h_2 h_3} \left[
\frac{\partial}{\partial u_1}\left(\frac{h_2 h_3}{h_1} \frac{\partial f}{\partial u_1}\right) +
\frac{\partial}{\partial u_2}\left(\frac{h_3 h_1}{h_2} \frac{\partial f}{\partial u_2}\right) +
\frac{\partial}{\partial u_3}\left(\frac{h_1 h_2}{h_3} \frac{\partial f}{\partial u_3}\right)
\right]
\]
---
### Cylindrical Coordinates
- **Displacement Vector**: \( d\mathbf{R} = dp \, e
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