Bessel’s equation is x2y′′ + xy′ + (x2 − n2)y = 0, where n is a scalar, y = y(x) is a function of the independent variable x, and y′ and y′′ are the first and second derivatives of y with respect to x. a) Show that x0 = 0 is a regular singular point. b) What does Fuch’s theorem have to say about a series solution about x0= 0? c) Consider the ansatz y(x) = xk Σ∞m=0 amxm, with a0 =/= 0, and k and the coefficients {am} are to be determined. Show that this ansatz, when used in Bessel’s equation, leads to the recurrence relation am[(m + k)2 - n2] = -am-2 (part c shown in attachment)
Bessel’s equation is x2y′′ + xy′ + (x2 − n2)y = 0, where n is a scalar, y = y(x) is a function of the independent variable x, and y′ and y′′ are the first and second derivatives of y with respect to x. a) Show that x0 = 0 is a regular singular point. b) What does Fuch’s theorem have to say about a series solution about x0= 0? c) Consider the ansatz y(x) = xk Σ∞m=0 amxm, with a0 =/= 0, and k and the coefficients {am} are to be determined. Show that this ansatz, when used in Bessel’s equation, leads to the recurrence relation am[(m + k)2 - n2] = -am-2 (part c shown in attachment)
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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Bessel’s equation is
x2y′′ + xy′ + (x2 − n2)y = 0,
where n is a scalar, y = y(x) is a function of the independent variable x, and y′ and y′′ are the first and second derivatives of y with respect to x.
a) Show that x0 = 0 is a regular singular point.
b) What does Fuch’s theorem have to say about a series solution about x0= 0?
c) Consider the ansatz y(x) = xk Σ∞m=0 amxm, with a0 =/= 0, and k and the coefficients {am}
are to be determined. Show that this ansatz, when used in Bessel’s equation, leads to the
recurrence relation am[(m + k)2 - n2] = -am-2 (part c shown in attachment)
![c) Consider the ansatz y(x) = xo amam, with ao # 0, and k and the coefficients {m}
are to be determined. Show that this ansatz, when used in Bessel's equation, leads to the
recurrence relation
am[(m + k)² = n²] =
=-am-2-](/v2/_next/image?url=https%3A%2F%2Fcontent.bartleby.com%2Fqna-images%2Fquestion%2F0a341486-b6c0-4b34-874d-c8e9c9f303aa%2F40f922f8-749a-428c-abb0-41a5fe546d9c%2F9qlz4ti_processed.png&w=3840&q=75)
Transcribed Image Text:c) Consider the ansatz y(x) = xo amam, with ao # 0, and k and the coefficients {m}
are to be determined. Show that this ansatz, when used in Bessel's equation, leads to the
recurrence relation
am[(m + k)² = n²] =
=-am-2-
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