10.2 problem 268

Internal problem ID [3015]

Book: Ordinary differential equations and their solutions. By George Moseley Murphy. 1960
Section: Various 10
Problem number: 268.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [[_homogeneous, `class G`], _rational, _Riccati]

\[ \boxed {y^{\prime } x^{2}-a -b x y-c \,x^{2} y^{2}=0} \]

Solution by Maple

Time used: 0.016 (sec). Leaf size: 57

dsolve(x^2*diff(y(x),x) = a+b*x*y(x)+c*x^2*y(x)^2,y(x), singsol=all)
 

\[ y \left (x \right ) = -\frac {b +1+\tan \left (\frac {\sqrt {4 a c -b^{2}-2 b -1}\, \left (-\ln \left (x \right )+c_{1} \right )}{2}\right ) \sqrt {4 a c -b^{2}-2 b -1}}{2 c x} \]

Solution by Mathematica

Time used: 0.28 (sec). Leaf size: 93

DSolve[x^2 y'[x]==a+b x y[x]+c x^2 y[x]^2,y[x],x,IncludeSingularSolutions -> True]
 

\begin{align*} y(x)\to -\frac {\sqrt {(b+1)^2-4 a c} \left (1-\frac {2 c_1}{x^{\sqrt {(b+1)^2-4 a c}}+c_1}\right )+b+1}{2 c x} \\ y(x)\to \frac {\sqrt {(b+1)^2-4 a c}-b-1}{2 c x} \\ \end{align*}