2.90 problem 666

Internal problem ID [9001]

Book: Differential Gleichungen, E. Kamke, 3rd ed. Chelsea Pub. NY, 1948
Section: Chapter 1, Additional non-linear first order
Problem number: 666.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [[_1st_order, `_with_symmetry_[F(x),G(x)*y+H(x)]`]]

\[ \boxed {y^{\prime }-\left (-\ln \left (y\right )+1+x^{2}+x^{3}\right ) y=0} \]

Solution by Maple

Time used: 0.062 (sec). Leaf size: 24

dsolve(diff(y(x),x) = (-ln(y(x))+1+x^2+x^3)*y(x),y(x), singsol=all)
 

\[ y \left (x \right ) = {\mathrm e}^{{\mathrm e}^{-x} c_{1} +x^{3}-2 x^{2}+4 x -3} \]

Solution by Mathematica

Time used: 0.411 (sec). Leaf size: 29

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

\[ y(x)\to e^{x^3-2 x^2+4 x-c_1 e^{-x}-3} \]