Showing that bessel function satifies differential equation

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SUMMARY

The discussion centers on demonstrating that the function \( y = x^{-n} J_n(x) \) satisfies the differential equation \( y'' + \frac{(1+2n)}{x} y' + y = 0 \). The user attempts to differentiate the function but encounters difficulties, particularly with the application of the product rule during differentiation. The correct application of differentiation rules is crucial for confirming that the equation holds true.

PREREQUISITES
  • Understanding of Bessel functions, specifically \( J_n(x) \)
  • Proficiency in calculus, particularly differentiation techniques
  • Familiarity with differential equations and their solutions
  • Knowledge of the product rule in differentiation
NEXT STEPS
  • Review the properties and applications of Bessel functions
  • Practice differentiation techniques, focusing on the product rule
  • Study solutions to second-order linear differential equations
  • Explore examples of Bessel functions satisfying differential equations
USEFUL FOR

Students and researchers in mathematics or physics, particularly those studying differential equations and Bessel functions, will benefit from this discussion.

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Homework Statement


Show that y'' + ((1+2n)/x)y' + y = 0 is satisfied by x-nJn(x)


Homework Equations


y= x-nJn(x)
y'=-x-nJn+1(x)
y''=nx-n-1Jn+1(x) - x-n(dJn+1(x)
/dx)

The Attempt at a Solution


Equation in question becomes:
x-n(2(n/x)Jn+1 - Jn - ((1+2n)/x)Jn+1 + Jn)

= x-n(-x-1Jn+1)
which isn't 0 :confused:?

Perhaps I made the mistake when I differentiated y?
Help would be very much appreciated.
 
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Well, when u are going differentiation, Y=X*J(x)
You see its a product of X and J(X), so u have to used product rules.
Y'=J(x)D(x)+xD(J(x)).
 

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