Internal problem ID [12979]
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 1.6 page 89
Problem number: 25.
ODE order: 1.
ODE degree: 1.
CAS Maple gives this as type [_quadrature]
\[ \boxed {y^{\prime }-y^{2}+4 y=2} \] With initial conditions \begin {align*} [y \left (0\right ) = -4] \end {align*}
✓ Solution by Maple
Time used: 0.125 (sec). Leaf size: 24
dsolve([diff(y(t),t)=y(t)^2-4*y(t)+2,y(0) = -4],y(t), singsol=all)
\[ y \left (t \right ) = -\sqrt {2}\, \tanh \left (\operatorname {arctanh}\left (3 \sqrt {2}\right )+\sqrt {2}\, t \right )+2 \]
✓ Solution by Mathematica
Time used: 0.069 (sec). Leaf size: 63
DSolve[{y'[t]==y[t]^2-4*y[t]+2,{y[0]==-4}},y[t],t,IncludeSingularSolutions -> True]
\[ y(t)\to -\frac {2 \left (\left (2 \sqrt {2}-5\right ) e^{2 \sqrt {2} t}+5+2 \sqrt {2}\right )}{\left (6+\sqrt {2}\right ) e^{2 \sqrt {2} t}-6+\sqrt {2}} \]