4.6 problem 27

Internal problem ID [10435]

Book: Handbook of exact solutions for ordinary differential equations. By Polyanin and Zaitsev. Second edition
Section: Chapter 1, section 1.2. Riccati Equation. subsection 1.2.3-2. Equations with power and exponential functions
Problem number: 27.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [_Riccati]

\[ \boxed {y^{\prime }-a \,{\mathrm e}^{\lambda x} y^{2}+a b \,x^{n} {\mathrm e}^{\lambda x} y=b \,x^{n -1} n} \]

Solution by Maple

Time used: 0.0 (sec). Leaf size: 88

dsolve(diff(y(x),x)=a*exp(lambda*x)*y(x)^2-a*b*x^(n)*exp(lambda*x)*y(x)+b*n*x^(n-1),y(x), singsol=all)
 

\[ y \left (x \right ) = \frac {x^{n} \lambda \left (\int {\mathrm e}^{x \lambda +a b \left (\int {\mathrm e}^{x \lambda } x^{n}d x \right )}d x \right ) c_{1} a b +x^{n} a b -c_{1} \lambda \,{\mathrm e}^{a b \left (\int {\mathrm e}^{x \lambda } x^{n}d x \right )}}{a \left (\lambda \left (\int {\mathrm e}^{x \lambda +a b \left (\int {\mathrm e}^{x \lambda } x^{n}d x \right )}d x \right ) c_{1} +1\right )} \]

Solution by Mathematica

Time used: 63.132 (sec). Leaf size: 188

DSolve[y'[x]==a*Exp[\[Lambda]*x]*y[x]^2-a*b*x^(n)*Exp[\[Lambda]*x]*y[x]+b*n*x^(n-1),y[x],x,IncludeSingularSolutions -> True]
 

\[ y(x)\to \frac {a b c_1 \left (\frac {\log \left (e^{\lambda x}\right )}{\lambda }\right )^n \int _1^{e^{x \lambda }}\exp \left (\frac {a b \Gamma (n+1,-\log (K[1])) (-\log (K[1]))^{-n} \left (\frac {\log (K[1])}{\lambda }\right )^n}{\lambda }\right )dK[1]-c_1 \lambda \exp \left (\frac {a b \left (-\log \left (e^{\lambda x}\right )\right )^{-n} \left (\frac {\log \left (e^{\lambda x}\right )}{\lambda }\right )^n \Gamma \left (n+1,-\log \left (e^{x \lambda }\right )\right )}{\lambda }\right )+a b \left (\frac {\log \left (e^{\lambda x}\right )}{\lambda }\right )^n}{a+a c_1 \int _1^{e^{x \lambda }}\exp \left (\frac {a b \Gamma (n+1,-\log (K[1])) (-\log (K[1]))^{-n} \left (\frac {\log (K[1])}{\lambda }\right )^n}{\lambda }\right )dK[1]} \]