Internal problem ID [10420]
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: 2.
ODE order: 1.
ODE degree: 1.
CAS Maple gives this as type [_Riccati]
\[ \boxed {y^{\prime }-y^{2}=a \lambda \,{\mathrm e}^{\lambda x}-a^{2} {\mathrm e}^{2 \lambda x}} \]
✓ Solution by Maple
Time used: 0.0 (sec). Leaf size: 63
dsolve(diff(y(x),x)=y(x)^2+a*lambda*exp(lambda*x)-a^2*exp(2*lambda*x),y(x), singsol=all)
\[ y \left (x \right ) = \frac {\operatorname {Ei}_{1}\left (-\frac {2 \,{\mathrm e}^{\lambda x} a}{\lambda }\right ) {\mathrm e}^{\lambda x} c_{1} a +{\mathrm e}^{\frac {2 \,{\mathrm e}^{\lambda x} a}{\lambda }} c_{1} \lambda +{\mathrm e}^{\lambda x} a}{\operatorname {Ei}_{1}\left (-\frac {2 \,{\mathrm e}^{\lambda x} a}{\lambda }\right ) c_{1} +1} \]
✓ Solution by Mathematica
Time used: 2.507 (sec). Leaf size: 79
DSolve[y'[x]==y[x]^2+a*\[Lambda]*Exp[\[Lambda]*x]-a^2*Exp[2*\[Lambda]*x],y[x],x,IncludeSingularSolutions -> True]
\begin{align*} y(x)\to \frac {a e^{\lambda x} \operatorname {ExpIntegralEi}\left (\frac {2 a e^{x \lambda }}{\lambda }\right )+\lambda \left (-e^{\frac {2 a e^{\lambda x}}{\lambda }}\right )+a c_1 e^{\lambda x}}{\operatorname {ExpIntegralEi}\left (\frac {2 a e^{x \lambda }}{\lambda }\right )+c_1} y(x)\to a e^{\lambda x} \end{align*}