# Express solution as bessel function

1. Jul 18, 2008

### Kazz81

Hi Guys, i'm an undergrad student...and i have a difficulty trying to solve

4xy" + 4y' + y = 0, and express the solution in term of Bessel function.

I have tried Frobenius method...then....it didn't work..and i'm really confused

Last edited: Jul 18, 2008
2. Jul 19, 2008

### HallsofIvy

Staff Emeritus
Bessel fuinctions are defined as solutions to Bessel's equation.

What is Bessel's equation?

Can you, perhaps by changing varables, change your equation to Bessel's equation?

3. Jul 19, 2008

### Kazz81

Even if I multiply x thru, then divide 4 thru...i still don't get (x^2)y...hmmm..(i.e. Bessel eqn order of zero)..