1.30 problem 30

Internal problem ID [7611]

Book: Differential Gleichungen, E. Kamke, 3rd ed. Chelsea Pub. NY, 1948
Section: Chapter 1, linear first order
Problem number: 30.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [_Riccati]

Solve \begin {gather*} \boxed {y^{\prime }+x^{-a -1} y^{2}-x^{a}=0} \end {gather*}

Solution by Maple

Time used: 0.002 (sec). Leaf size: 81

dsolve(diff(y(x),x) + x^(-a-1)*y(x)^2 - x^a=0,y(x), singsol=all)
 

\[ y \relax (x ) = -\frac {c_{1} x^{a +1} \BesselK \left (a +1, 2 \sqrt {x}\right )}{\sqrt {x}\, \left (\BesselK \left (a , 2 \sqrt {x}\right ) c_{1}+\BesselI \left (a , 2 \sqrt {x}\right )\right )}+\frac {\BesselI \left (a +1, 2 \sqrt {x}\right ) x^{a +1}}{\sqrt {x}\, \left (\BesselK \left (a , 2 \sqrt {x}\right ) c_{1}+\BesselI \left (a , 2 \sqrt {x}\right )\right )} \]

Solution by Mathematica

Time used: 0.341 (sec). Leaf size: 84

DSolve[y'[x] + x^(-a-1)*y[x]^2 - x^a==0,y[x],x,IncludeSingularSolutions -> True]
 

\begin{align*} y(x)\to \frac {x^a \left (-a \, _0F_1(;-a;x)+(-1)^a c_1 x^{a+1} \operatorname {Gamma}(a+1) \, _0\tilde {F}_1(;a+2;x)\right )}{\, _0F_1(;1-a;x)+(-1)^a c_1 x^a \, _0F_1(;a+1;x)} \\ y(x)\to \frac {x^{a+1} \, _0\tilde {F}_1(;a+2;x)}{\, _0\tilde {F}_1(;a+1;x)} \\ \end{align*}