21.14 problem 590

Internal problem ID [3332]

Book: Ordinary differential equations and their solutions. By George Moseley Murphy. 1960
Section: Various 21
Problem number: 590.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [_rational, [_Abel, 2nd type, class B]]

Solve \begin {gather*} \boxed {x^{7} y y^{\prime }-2 x^{2}-2-5 x^{3} y=0} \end {gather*}

Solution by Maple

Time used: 0.0 (sec). Leaf size: 96

dsolve(x^7*y(x)*diff(y(x),x) = 2*x^2+2+5*x^3*y(x),y(x), singsol=all)
 

\[ c_{1}+\frac {-\frac {\left (y \relax (x ) x^{3}+1\right ) \hypergeom \left (\left [\frac {1}{2}, \frac {5}{4}\right ], \left [\frac {3}{2}\right ], -\frac {\left (y \relax (x ) x^{3}+1\right )^{2}}{x^{2}}\right ) \left (\frac {x^{6} y \relax (x )^{2}+2 y \relax (x ) x^{3}+x^{2}+1}{x^{2}}\right )^{\frac {1}{4}}}{x}-2 x}{\left (\frac {x^{6} y \relax (x )^{2}+2 y \relax (x ) x^{3}+x^{2}+1}{x^{2}}\right )^{\frac {1}{4}}} = 0 \]

Solution by Mathematica

Time used: 0.378 (sec). Leaf size: 98

DSolve[x^7 y[x] y'[x]==2(1+x^2)+5 x^3 y[x],y[x],x,IncludeSingularSolutions -> True]
 

\[ \text {Solve}\left [c_1=\frac {\frac {i \left (x^3 y(x)+1\right ) \sqrt [4]{x^4 y(x)^2+\frac {1}{x^2}+2 x y(x)+1} \text {Hypergeometric2F1}\left (\frac {1}{2},\frac {5}{4},\frac {3}{2},-\frac {\left (x^3 y(x)+1\right )^2}{x^2}\right )}{2 x}+i x}{\sqrt [4]{-\frac {\left (x^3 y(x)+1\right )^2}{x^2}-1}},y(x)\right ] \]