1.274 problem 275

Internal problem ID [8611]

Book: Differential Gleichungen, E. Kamke, 3rd ed. Chelsea Pub. NY, 1948
Section: Chapter 1, linear first order
Problem number: 275.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [_rational]

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

Solution by Maple

Time used: 0.031 (sec). Leaf size: 30

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

\[ c_{1} +\frac {{\mathrm e}^{-2 i y \left (x \right )} \left (i x +y \left (x \right )\right )}{2 i y \left (x \right )+2 x} = 0 \]

Solution by Mathematica

Time used: 0.111 (sec). Leaf size: 18

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

\[ \text {Solve}\left [y(x)-\arctan \left (\frac {x}{y(x)}\right )=c_1,y(x)\right ] \]