3.19 problem 19

Internal problem ID [10427]

Book: Handbook of exact solutions for ordinary differential equations. By Polyanin and Zaitsev. Second edition
Section: Chapter 1, section 1.2. Riccati Equation. subsection 1.2.3. Equations Containing Exponential Functions
Problem number: 19.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [[_1st_order, `_with_symmetry_[F(x),G(x)]`], _Riccati]

\[ \boxed {y^{\prime }-{\mathrm e}^{x \mu } \left (y-b \,{\mathrm e}^{\lambda x}\right )^{2}=b \lambda \,{\mathrm e}^{\lambda x}} \]

Solution by Maple

Time used: 0.0 (sec). Leaf size: 44

dsolve(diff(y(x),x)=exp(mu*x)*(y(x)-b*exp(lambda*x))^2+b*lambda*exp(lambda*x),y(x), singsol=all)
 

\[ y \left (x \right ) = \frac {\left ({\mathrm e}^{x \left (\lambda +\mu \right )} c_{1} b \mu +b \,{\mathrm e}^{x \lambda }-c_{1} \mu ^{2}\right ) {\mathrm e}^{-x \mu }}{c_{1} \mu +{\mathrm e}^{-x \mu }} \]

Solution by Mathematica

Time used: 1.524 (sec). Leaf size: 40

DSolve[y'[x]==Exp[\[Mu]*x]*(y[x]-b*Exp[\[Lambda]*x])^2+b*\[Lambda]*Exp[\[Lambda]*x],y[x],x,IncludeSingularSolutions -> True]
 

\begin{align*} y(x)\to b e^{\lambda x}+\frac {\mu }{-e^{\mu x}+c_1 \mu } \\ y(x)\to b e^{\lambda x} \\ \end{align*}