Internal problem ID [12791]
Book: DIFFERENTIAL EQUATIONS by Paul Blanchard, Robert L. Devaney, Glen R. Hall. 4th
edition. Brooks/Cole. Boston, USA. 2012
Section: Chapter 3. Linear Systems. Exercises section 3.4 page 310
Problem number: 26.
ODE order: 1.
ODE degree: 1.
Solve \begin {align*} x^{\prime }\left (t \right )&=-3 x \left (t \right )+10 y\\ y^{\prime }&=-x \left (t \right )+3 y \end {align*}
✓ Solution by Maple
Time used: 0.015 (sec). Leaf size: 37
dsolve([diff(x(t),t)=-3*x(t)+10*y(t),diff(y(t),t)=-x(t)+3*y(t)],[x(t), y(t)], singsol=all)
\begin{align*} x \left (t \right ) = -\cos \left (t \right ) c_{1} +\sin \left (t \right ) c_{2} +3 \sin \left (t \right ) c_{1} +3 \cos \left (t \right ) c_{2} y \left (t \right ) = \sin \left (t \right ) c_{1} +\cos \left (t \right ) c_{2} \end{align*}
✓ Solution by Mathematica
Time used: 0.007 (sec). Leaf size: 42
DSolve[{x'[t]==-3*x[t]+10*y[t],y'[t]==-x[t]+3*y[t]},{x[t],y[t]},t,IncludeSingularSolutions -> True]
\begin{align*} x(t)\to 10 c_2 \sin (t)+c_1 (\cos (t)-3 \sin (t)) y(t)\to c_2 (3 \sin (t)+\cos (t))-c_1 \sin (t) \end{align*}