Suppose that (z) is entire and that the harmonic function u(x, y) = Re[fz)] has an upper bound uo; that is, u(x, y) < uo for all points (x, y) in the xy-plane. Show that u(x, y) must be constant throughout the plane by applying Liouville's theorem to the function g(z) = exp[f(z)]. 12. %3D

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
icon
Concept explainers
Topic Video
Question
Question 12
8.
Let Cj denote the positively oriented boundary of the square whose sides lie along
the lines x=±l_and y= +1 and let C be the positively oriented circle |z| = 4, as
shown below. Explain why
1
dz =
+1
dz
2z2
2z2 +1
C2
9.
Let C be the positively oriented circle centered at the point zo with radiusr>0.
Use a parametrization of C to show that
dz
= 27i
Cz- Zo
10.
Let C denote the positively oriented circle |z| = 1. Show that
2 sin(z)
Ti
dz =
4
- ni
cos(z)
a)
dz =
b)
4z + T
C
c z(z +8)
11.
Let C denote the positively oriented circle z - i = 2. Evaluate the integrals:
b)
e
a)
3
+ 2z
dz
dz
2
CZ +4
č (z - 1)
Suppose that fAz) is entire and that the harmonic function u(x, y) = Re[f(z)] has an
upper bound uo; that is, u(x, y) <uo for all points (x, y) in the xy-plane. Show that
u(x, y) must be constant throughout the plane by applying Liouville's theorem to
the function g(z) = exp[f{z)].
12.
Transcribed Image Text:8. Let Cj denote the positively oriented boundary of the square whose sides lie along the lines x=±l_and y= +1 and let C be the positively oriented circle |z| = 4, as shown below. Explain why 1 dz = +1 dz 2z2 2z2 +1 C2 9. Let C be the positively oriented circle centered at the point zo with radiusr>0. Use a parametrization of C to show that dz = 27i Cz- Zo 10. Let C denote the positively oriented circle |z| = 1. Show that 2 sin(z) Ti dz = 4 - ni cos(z) a) dz = b) 4z + T C c z(z +8) 11. Let C denote the positively oriented circle z - i = 2. Evaluate the integrals: b) e a) 3 + 2z dz dz 2 CZ +4 č (z - 1) Suppose that fAz) is entire and that the harmonic function u(x, y) = Re[f(z)] has an upper bound uo; that is, u(x, y) <uo for all points (x, y) in the xy-plane. Show that u(x, y) must be constant throughout the plane by applying Liouville's theorem to the function g(z) = exp[f{z)]. 12.
Expert Solution
trending now

Trending now

This is a popular solution!

steps

Step by step

Solved in 2 steps with 1 images

Blurred answer
Knowledge Booster
Sample space, Events, and Basic Rules of Probability
Learn more about
Need a deep-dive on the concept behind this application? Look no further. Learn more about this topic, advanced-math and related others by exploring similar questions and additional content below.
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,