Let C, be the straight line path z = (1 + í)4, 0 sts 1; Ca the quarter circle z = 1 - cos t + i sin t, 0

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
Section: Chapter Questions
Problem 1RQ
icon
Related questions
Question

Just number 8

The text outlines a problem involving the evaluation of complex line integrals along different paths. The situation described uses three paths in the complex plane:

- **C₁**: A straight line path, \( z = (1 + t)i \), where \( 0 \leq t \leq 1 \).
- **C₂**: A quarter circle path, \( z = 1 - \cos t + i \sin t \), where \( 0 \leq t \leq \frac{\pi}{2} \).
- **C₃**: A path defined by \( z = t \), where \( 0 \leq t \leq 1 \), and \( z = 1 + i(t-1) \), where \( 1 \leq t \leq 2 \).

The task is to demonstrate the following expressions:

7. \[
\int_{C_1} z \, dz = \int_{C_2} z \, dz = \int_{C_3} z \, dz = i
\]

8. \[
\int_{C_1} z^* \, dz = 1, \quad \int_{C_2} z \, dz = 1 + i(1 - \frac{\pi}{2}), \quad \int_{C_3} z \, dz = 1 + i
\] 

In this problem, \( z^* \) denotes the complex conjugate of \( z \). Each integral represents a line integral of the complex function along the given path.
Transcribed Image Text:The text outlines a problem involving the evaluation of complex line integrals along different paths. The situation described uses three paths in the complex plane: - **C₁**: A straight line path, \( z = (1 + t)i \), where \( 0 \leq t \leq 1 \). - **C₂**: A quarter circle path, \( z = 1 - \cos t + i \sin t \), where \( 0 \leq t \leq \frac{\pi}{2} \). - **C₃**: A path defined by \( z = t \), where \( 0 \leq t \leq 1 \), and \( z = 1 + i(t-1) \), where \( 1 \leq t \leq 2 \). The task is to demonstrate the following expressions: 7. \[ \int_{C_1} z \, dz = \int_{C_2} z \, dz = \int_{C_3} z \, dz = i \] 8. \[ \int_{C_1} z^* \, dz = 1, \quad \int_{C_2} z \, dz = 1 + i(1 - \frac{\pi}{2}), \quad \int_{C_3} z \, dz = 1 + i \] In this problem, \( z^* \) denotes the complex conjugate of \( z \). Each integral represents a line integral of the complex function along the given path.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 4 steps with 3 images

Blurred answer
Recommended textbooks for you
Advanced Engineering Mathematics
Advanced Engineering Mathematics
Advanced Math
ISBN:
9780470458365
Author:
Erwin Kreyszig
Publisher:
Wiley, John & Sons, Incorporated
Numerical Methods for Engineers
Numerical Methods for Engineers
Advanced Math
ISBN:
9780073397924
Author:
Steven C. Chapra Dr., Raymond P. Canale
Publisher:
McGraw-Hill Education
Introductory Mathematics for Engineering Applicat…
Introductory Mathematics for Engineering Applicat…
Advanced Math
ISBN:
9781118141809
Author:
Nathan Klingbeil
Publisher:
WILEY
Mathematics For Machine Technology
Mathematics For Machine Technology
Advanced Math
ISBN:
9781337798310
Author:
Peterson, John.
Publisher:
Cengage Learning,
Basic Technical Mathematics
Basic Technical Mathematics
Advanced Math
ISBN:
9780134437705
Author:
Washington
Publisher:
PEARSON
Topology
Topology
Advanced Math
ISBN:
9780134689517
Author:
Munkres, James R.
Publisher:
Pearson,