Consider the following Sturm-Liouville system: A²yk-1 + Ayk = 0, (3.203) (3.204) Yo = 0, YN+1 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
100%

Explain the determaine and the Q is complete

Example A
Consider the following Sturm-Liouville system:
A²yk-1+ Ayk = 0,
(3.203)
Yo = 0,
YN+1 = 0.
(3.204)
0,
Comparison with equations (3.177) and (3.178) shows that Pk-1
rk = 1, ao = 1, a1 = 0, an = 0, and an+1=
1, qk
1. If we let
2 - X = 2 cos 0,
(3.205)
then equation (3.203) becomes
Yk+1 – (2 cos 0)yk + Yk-1 = 0,
(3.206)
which has the solution
Yk = c1 cos k0 + c2 sin k0,
(3.207)
c2 are arbitrary constants. The first boundary conditions yo = 0
0. The second boundary condition yN+1 =
where
C1
and
gives c1 =
0 gives
sin(N + 1)0 = 0
(3.208)
or
(N + 1)0 — пт,
= 1,2, 3, ....
(3.209)
n =
Thus, the eigenvalues A, are, from equation (3.205), given by the expression
= 2 |1
COS
+ 1
(3.210)
:4 sin?
2(N +1) )
п %3D 1,2, 3, ....
1, 2,....N, since after
Note that there are only N distinct values of n, i.e., n =
n = N the values of the eigenvalues repeat themselves. The N eigenfunctions
associated with these eigenvalues can be determined from equations (3.207),
(3.209), and (3.210); they are
knT
Pn,k
n = 1,2, ...., N.
(3.211)
sin
N+1
Transcribed Image Text:Example A Consider the following Sturm-Liouville system: A²yk-1+ Ayk = 0, (3.203) Yo = 0, YN+1 = 0. (3.204) 0, Comparison with equations (3.177) and (3.178) shows that Pk-1 rk = 1, ao = 1, a1 = 0, an = 0, and an+1= 1, qk 1. If we let 2 - X = 2 cos 0, (3.205) then equation (3.203) becomes Yk+1 – (2 cos 0)yk + Yk-1 = 0, (3.206) which has the solution Yk = c1 cos k0 + c2 sin k0, (3.207) c2 are arbitrary constants. The first boundary conditions yo = 0 0. The second boundary condition yN+1 = where C1 and gives c1 = 0 gives sin(N + 1)0 = 0 (3.208) or (N + 1)0 — пт, = 1,2, 3, .... (3.209) n = Thus, the eigenvalues A, are, from equation (3.205), given by the expression = 2 |1 COS + 1 (3.210) :4 sin? 2(N +1) ) п %3D 1,2, 3, .... 1, 2,....N, since after Note that there are only N distinct values of n, i.e., n = n = N the values of the eigenvalues repeat themselves. The N eigenfunctions associated with these eigenvalues can be determined from equations (3.207), (3.209), and (3.210); they are knT Pn,k n = 1,2, ...., N. (3.211) sin N+1
Expert Solution
steps

Step by step

Solved in 2 steps

Blurred answer
Knowledge Booster
Determinant
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,