1.496 problem 498

Internal problem ID [8833]

Book: Differential Gleichungen, E. Kamke, 3rd ed. Chelsea Pub. NY, 1948
Section: Chapter 1, linear first order
Problem number: 498.
ODE order: 1.
ODE degree: 2.

CAS Maple gives this as type [_quadrature]

\[ \boxed {\left (3 y-2\right ) {y^{\prime }}^{2}+4 y=4} \]

Solution by Maple

Time used: 0.125 (sec). Leaf size: 99

dsolve((3*y(x)-2)*diff(y(x),x)^2-4+4*y(x) = 0,y(x), singsol=all)
 

\begin{align*} y \left (x \right ) &= 1 \\ y \left (x \right ) &= \frac {\sin \left (\operatorname {RootOf}\left (8 \sqrt {3}\, c_{1} \textit {\_Z} -8 \sqrt {3}\, x \textit {\_Z} +\cos \left (\textit {\_Z} \right )^{2}-48 c_{1}^{2}+96 c_{1} x -48 x^{2}-\textit {\_Z}^{2}\right )\right )}{6}+\frac {5}{6} \\ y \left (x \right ) &= \frac {\sin \left (\operatorname {RootOf}\left (8 \sqrt {3}\, c_{1} \textit {\_Z} -8 \sqrt {3}\, x \textit {\_Z} -\cos \left (\textit {\_Z} \right )^{2}+48 c_{1}^{2}-96 c_{1} x +48 x^{2}+\textit {\_Z}^{2}\right )\right )}{6}+\frac {5}{6} \\ \end{align*}

Solution by Mathematica

Time used: 0.367 (sec). Leaf size: 132

DSolve[-4 + 4*y[x] + (-2 + 3*y[x])*y'[x]^2==0,y[x],x,IncludeSingularSolutions -> True]
                                                                                    
                                                                                    
 

\begin{align*} y(x)\to \text {InverseFunction}\left [\frac {\arctan \left (\frac {\sqrt {3 \text {$\#$1}-2}}{\sqrt {3-3 \text {$\#$1}}}\right )}{\sqrt {3}}-\sqrt {1-\text {$\#$1}} \sqrt {3 \text {$\#$1}-2}\&\right ][-2 x+c_1] \\ y(x)\to \text {InverseFunction}\left [\frac {\arctan \left (\frac {\sqrt {3 \text {$\#$1}-2}}{\sqrt {3-3 \text {$\#$1}}}\right )}{\sqrt {3}}-\sqrt {1-\text {$\#$1}} \sqrt {3 \text {$\#$1}-2}\&\right ][2 x+c_1] \\ y(x)\to 1 \\ \end{align*}