Show that d ᏧᎾ do is identical to the differential equation for Legendre polynomials so that sin 8- do sin 0 d² Pe dPe 2x- + l(l +1) P₂ = 0 dx² dr if m= 0 and L = l(l + 1) and (0) = P₂(x) and (1 — x²) - + (L sin² 0 − m²) = 0 - d de x = cos dx d de dr = sin 0- d dx

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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Show that
ᏧᎾ
deo) + (Lsin² 0 − m²) = 0
is identical to the differential equation for Legendre polynomials
d
so that
sin 0-
de
sin 0-
dPe
(1-x²) ² Pt
dr²
dx
if m = 0 and L = l(l + 1) and (0) = P₂(x) and
d
de
Be careful of the second derivatives.
2x-
x = cos
dx d
do dr
=
+ l(l + 1)P₂ = 0
sin 0.
d
dx
Transcribed Image Text:Show that ᏧᎾ deo) + (Lsin² 0 − m²) = 0 is identical to the differential equation for Legendre polynomials d so that sin 0- de sin 0- dPe (1-x²) ² Pt dr² dx if m = 0 and L = l(l + 1) and (0) = P₂(x) and d de Be careful of the second derivatives. 2x- x = cos dx d do dr = + l(l + 1)P₂ = 0 sin 0. d dx
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