2.23 problem 23

Internal problem ID [909]

Book: Elementary differential equations with boundary value problems. William F. Trench. Brooks/Cole 2001
Section: Chapter 2, First order equations. Linear first order. Section 2.1 Page 41
Problem number: 23.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [_linear]

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

Solution by Maple

Time used: 0.015 (sec). Leaf size: 17

dsolve(diff(y(x),x) +(2*sin(x)*cos(x))*y(x)=exp(-sin(x)^2),y(x), singsol=all)
 

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

Solution by Mathematica

Time used: 0.077 (sec). Leaf size: 24

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

\begin{align*} y(x)\to \left (x+\sqrt {e} c_1\right ) e^{-\sin ^2(x)} \\ \end{align*}