4. The generating function for the regular Bessel functions of integer order is [(-)] = [(x). I exp Using this fact to show that m=18 2Jm(x) = Jm-1(x) — Jm+1(x). Although this only shows the relation to hold for integer m values, it turns out to hold for non-integer m values as well.

Advanced Engineering Mathematics
10th Edition
ISBN:9780470458365
Author:Erwin Kreyszig
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Chapter2: Second-order Linear Odes
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Question 4.
**Generating Function for Regular Bessel Functions**

The generating function for the regular Bessel functions of integer order is given by:

\[
\exp\left[\frac{x}{2}\left(h - \frac{1}{h}\right)\right] = \sum_{m=-\infty}^{\infty} h^m J_m(x).
\]

Using this fact, we can show that:

\[
2J'_m(x) = J_{m-1}(x) - J_{m+1}(x).
\]

Although this relation is shown to hold for integer \( m \) values, it also applies to non-integer \( m \) values.
Transcribed Image Text:**Generating Function for Regular Bessel Functions** The generating function for the regular Bessel functions of integer order is given by: \[ \exp\left[\frac{x}{2}\left(h - \frac{1}{h}\right)\right] = \sum_{m=-\infty}^{\infty} h^m J_m(x). \] Using this fact, we can show that: \[ 2J'_m(x) = J_{m-1}(x) - J_{m+1}(x). \] Although this relation is shown to hold for integer \( m \) values, it also applies to non-integer \( m \) values.
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