7.17 problem 17

Internal problem ID [13119]

Book: Ordinary Differential Equations. An introduction to the fundamentals. Kenneth B. Howell. second edition. CRC Press. FL, USA. 2020
Section: Chapter 8. Review exercises for part of part II. page 143
Problem number: 17.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [_separable]

\[ \boxed {y^{\prime }-\frac {1}{x y-3 x}=0} \]

Solution by Maple

Time used: 0.0 (sec). Leaf size: 35

dsolve(diff(y(x),x)=1/(x*y(x)-3*x),y(x), singsol=all)
 

\begin{align*} y = 3-\sqrt {9+2 \ln \left (x \right )+2 c_{1}} y = 3+\sqrt {9+2 \ln \left (x \right )+2 c_{1}} \end{align*}

Solution by Mathematica

Time used: 0.099 (sec). Leaf size: 43

DSolve[y'[x]==1/(x*y[x]-3*x),y[x],x,IncludeSingularSolutions -> True]
 

\begin{align*} y(x)\to 3-\sqrt {2 \log (x)+9+2 c_1} y(x)\to 3+\sqrt {2 \log (x)+9+2 c_1} \end{align*}