Internal problem ID [12671]
Book: DIFFERENTIAL EQUATIONS by Paul Blanchard, Robert L. Devaney, Glen R. Hall. 4th
edition. Brooks/Cole. Boston, USA. 2012
Section: Chapter 1. First-Order Differential Equations. Exercises section 1.8 page 121
Problem number: 2.
ODE order: 1.
ODE degree: 1.
CAS Maple gives this as type [[_linear, `class A`]]
\[ \boxed {y^{\prime }+4 y=3 \,{\mathrm e}^{-t}} \]
✓ Solution by Maple
Time used: 0.0 (sec). Leaf size: 15
dsolve(diff(y(t),t)=-4*y(t)+3*exp(-t),y(t), singsol=all)
\[ y \left (t \right ) = \left ({\mathrm e}^{3 t}+c_{1} \right ) {\mathrm e}^{-4 t} \]
✓ Solution by Mathematica
Time used: 0.087 (sec). Leaf size: 19
DSolve[y'[t]==-4*y[t]+3*Exp[-t],y[t],t,IncludeSingularSolutions -> True]
\[ y(t)\to e^{-4 t} \left (e^{3 t}+c_1\right ) \]