1. y" + y = 0

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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12:55 о
all atl & 16
Power Series Solution Usin...
Activity 3
1. у" + у30
Power Series
>. anx" = ao + a1x + azx² + a3x³ + anx"
n=0
y = a, + a1x + azx² + azx³ + a4x*
y' = a1 + 2a2x + 3azx² + 4a4x³
у" %3D 2а, + 6азх + 12а,x2
y" = 6az + 24a4x
yiv = 4.3.2a4
ex1.y' - у %3D 0
(а, + 2а2x + Зазx2 + 4а,x3) - (аo +a,x +azx2 + азх3 + а,х4)
a1 - ao = 0, a = ao
a,
2a2 – a1 = 0, a =
ao
2
2!
ao
a2
3az - az = 0, az =
ao
%D
3!
ao
az
4a4 – az = 0, a4 =
do
%3D
4!
y = f(x) = ao + a,x + a2x² + azx³
aox3
+
3!
a,x?
aox*
y = ao + aox +
2!
4!
x2 x3
x*
4! doe*
1 of 2
y = ao 1+x
2!
Transcribed Image Text:12:55 о all atl & 16 Power Series Solution Usin... Activity 3 1. у" + у30 Power Series >. anx" = ao + a1x + azx² + a3x³ + anx" n=0 y = a, + a1x + azx² + azx³ + a4x* y' = a1 + 2a2x + 3azx² + 4a4x³ у" %3D 2а, + 6азх + 12а,x2 y" = 6az + 24a4x yiv = 4.3.2a4 ex1.y' - у %3D 0 (а, + 2а2x + Зазx2 + 4а,x3) - (аo +a,x +azx2 + азх3 + а,х4) a1 - ao = 0, a = ao a, 2a2 – a1 = 0, a = ao 2 2! ao a2 3az - az = 0, az = ao %D 3! ao az 4a4 – az = 0, a4 = do %3D 4! y = f(x) = ao + a,x + a2x² + azx³ aox3 + 3! a,x? aox* y = ao + aox + 2! 4! x2 x3 x* 4! doe* 1 of 2 y = ao 1+x 2!
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