Determine the eigenvalues (2„) and eigenfunctions (9„(x)) for the differential equation p" (x) – 2xo'(x) + (2 + x²)@(x) = 0 %3D for 0

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
Publisher:Erwin Kreyszig
Chapter2: Second-order Linear Odes
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## A Regular Sturm-Liouville Problem

### Problem Statement:

Determine the eigenvalues (\(\lambda_n\)) and eigenfunctions (\(\varphi_n(x)\)) for the differential equation:

\[
\varphi''(x) - 2x\varphi'(x) + (\lambda + x^2)\varphi(x) = 0
\]

for \(0 \leq x \leq 1\), along with the boundary conditions:

\[
\varphi'(0) = \varphi(1) = 0.
\]

**Hint:** See Problem #4 of Homework #4.

### Instructions:

Determine the "dot" product for which \(\varphi_m \cdot \varphi_n = 0\) when \(m \neq n\), and use this to determine the coefficients \(a_n\) if the function 

\[
f(x) = e^{\frac{1}{2}x^2}
\]

is expanded as

\[
f(x) = e^{\frac{1}{2}x^2} = \sum_{n=1}^{\infty} a_n \varphi_n(x)
\]

for \(0 \leq x \leq 1\).
Transcribed Image Text:## A Regular Sturm-Liouville Problem ### Problem Statement: Determine the eigenvalues (\(\lambda_n\)) and eigenfunctions (\(\varphi_n(x)\)) for the differential equation: \[ \varphi''(x) - 2x\varphi'(x) + (\lambda + x^2)\varphi(x) = 0 \] for \(0 \leq x \leq 1\), along with the boundary conditions: \[ \varphi'(0) = \varphi(1) = 0. \] **Hint:** See Problem #4 of Homework #4. ### Instructions: Determine the "dot" product for which \(\varphi_m \cdot \varphi_n = 0\) when \(m \neq n\), and use this to determine the coefficients \(a_n\) if the function \[ f(x) = e^{\frac{1}{2}x^2} \] is expanded as \[ f(x) = e^{\frac{1}{2}x^2} = \sum_{n=1}^{\infty} a_n \varphi_n(x) \] for \(0 \leq x \leq 1\).
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