Bessel's modified equation

• Subject: Bessel's modified equation
• From: Radovan Omorjan
• Date: Fri, 15 May 2009 08:36:09 +0200

Hello,

I looked at the Maxima archive and did not find this (if I am wrong, sorry)

The Bessels' equation will solve with ode2

        ode2(x2*'diff(y,x,2)+x*'diff(y,x)+(x2-4)*y=0,y,x)

        y = bessel_y(2, x) %k2 + bessel_j(2, x) %k1

but the modified Bessel's will give false

        ode2(x2*'diff(y,x,2)+x*'diff(y,x)-(x2+4)*y=0,y,x)

        false

I am using EuMathT as a frontend to Maxima 5.16.3. I do not know if this 
has been corrected in the recent versions of Maxima.

Best Regards,
Radovan

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