17.13 problem 472

Internal problem ID [3217]

Book: Ordinary differential equations and their solutions. By George Moseley Murphy. 1960
Section: Various 17
Problem number: 472.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [[_homogeneous, `class C`], _rational, [_Abel, `2nd type``class A`]]

\[ \boxed {\left (19+9 x +2 y\right ) y^{\prime }+18-2 x -6 y=0} \]

Solution by Maple

Time used: 1.484 (sec). Leaf size: 29

dsolve((19+9*x+2*y(x))*diff(y(x),x)+18-2*x-6*y(x) = 0,y(x), singsol=all)
 

\[ y \left (x \right ) = 4+\frac {4 \left (x +3\right ) c_{1} +\sqrt {-40 \left (x +3\right ) c_{1} +1}-1}{8 c_{1}} \]

Solution by Mathematica

Time used: 14.63 (sec). Leaf size: 236

DSolve[(19+9 x+2 y[x])y'[x]+18-2 x-6 y[x]==0,y[x],x,IncludeSingularSolutions -> True]
 

\begin{align*} y(x)\to -\frac {9 x}{2}+\frac {(5-5 i) (x+3)}{\frac {i \sqrt {2}}{\sqrt {e^{\frac {2 c_1}{9}} (x+3)-i}}+(1-i)}-\frac {19}{2} \\ y(x)\to -\frac {9 x}{2}+\frac {(5-5 i) (x+3)}{(1-i)-\frac {i \sqrt {2}}{\sqrt {e^{\frac {2 c_1}{9}} (x+3)-i}}}-\frac {19}{2} \\ y(x)\to -\frac {9 x}{2}+\frac {(5-5 i) (x+3)}{(1-i)-\frac {\sqrt {2}}{\sqrt {e^{\frac {2 c_1}{9}} (x+3)+i}}}-\frac {19}{2} \\ y(x)\to -\frac {9 x}{2}+\frac {(5-5 i) (x+3)}{\frac {\sqrt {2}}{\sqrt {e^{\frac {2 c_1}{9}} (x+3)+i}}+(1-i)}-\frac {19}{2} \\ y(x)\to -2 (x+1) \\ y(x)\to \frac {x+11}{2} \\ \end{align*}