4.28.39 \((a+b x) y'(x)+c y(x)+x y''(x)=0\)

ODE
\[ (a+b x) y'(x)+c y(x)+x y''(x)=0 \] ODE Classification

[[_2nd_order, _with_linear_symmetries]]

Book solution method
TO DO

Mathematica
cpu = 0.0355092 (sec), leaf count = 48

\[\left \{\left \{y(x)\to e^{-b x} \left (c_1 U\left (a-\frac {c}{b},a,b x\right )+c_2 L_{\frac {c}{b}-a}^{a-1}(b x)\right )\right \}\right \}\]

Maple
cpu = 0.096 (sec), leaf count = 47

\[ \left \{ y \left ( x \right ) ={{\rm e}^{-bx}} \left ( {{\sl U}\left ({\frac {ab-c}{b}},\,a,\,bx\right )}{\it \_C2}+{{\sl M}\left ({\frac {ab-c}{b}},\,a,\,bx\right )}{\it \_C1} \right ) \right \} \] Mathematica raw input

DSolve[c*y[x] + (a + b*x)*y'[x] + x*y''[x] == 0,y[x],x]

Mathematica raw output

{{y[x] -> (C[1]*HypergeometricU[a - c/b, a, b*x] + C[2]*LaguerreL[-a + c/b, -1 +
 a, b*x])/E^(b*x)}}

Maple raw input

dsolve(x*diff(diff(y(x),x),x)+(b*x+a)*diff(y(x),x)+c*y(x) = 0, y(x),'implicit')

Maple raw output

y(x) = exp(-b*x)*(KummerU((a*b-c)/b,a,b*x)*_C2+KummerM((a*b-c)/b,a,b*x)*_C1)