Defines a modified Bessel equation of order ν: x²y'' + xy' - (x² + ν²)y = 0. Equivalent: y'' = -(1/x)y' + (1 + (ν²/x²))y. Note: singular at x=0. Start from x>0.
Order ν
Defines a modified Bessel equation of order ν: x²y'' + xy' - (x² + ν²)y = 0. Equivalent: y'' = -(1/x)y' + (1 + (ν²/x²))y. Note: singular at x=0. Start from x>0.