Internal problem ID [9087]
Book: Differential Gleichungen, E. Kamke, 3rd ed. Chelsea Pub. NY, 1948
Section: Chapter 1, Additional non-linear first order
Problem number: 752.
ODE order: 1.
ODE degree: 1.
CAS Maple gives this as type [`y=_G(x,y')`]
\[ \boxed {y^{\prime }-\frac {\cos \left (y\right ) \left (\cos \left (y\right ) x^{3}-x -1\right )}{\left (\sin \left (y\right ) x -1\right ) \left (1+x \right )}=0} \]
✓ Solution by Maple
Time used: 0.062 (sec). Leaf size: 2497
dsolve(diff(y(x),x) = cos(y(x))/(x*sin(y(x))-1)*(cos(y(x))*x^3-x-1)/(x+1),y(x), singsol=all)
\begin{align*} \text {Expression too large to display} \text {Expression too large to display} \end{align*}
✓ Solution by Mathematica
Time used: 4.957 (sec). Leaf size: 867
DSolve[y'[x] == (Cos[y[x]]*(-1 - x + x^3*Cos[y[x]]))/((1 + x)*(-1 + x*Sin[y[x]])),y[x],x,IncludeSingularSolutions -> True]
\begin{align*} y(x)\to \tan ^{-1}\left (\frac {6 \left (2 x^4-3 x^3+6 x^2+\sqrt {4 x^6-12 x^5+33 x^4+12 (-3+2 c_1) x^3-36 c_1 x^2-12 \left (2 x^3-3 x^2+6 x+6 c_1\right ) \log (x+1)+36 \log ^2(x+1)+72 c_1 x+36 \left (1+c_1{}^2\right )}-6 x \log (x+1)+6 c_1 x\right )}{4 x^6-12 x^5+33 x^4+12 (-3+2 c_1) x^3-36 (-1+c_1) x^2-12 \left (2 x^3-3 x^2+6 x+6 c_1\right ) \log (x+1)+36 \log ^2(x+1)+72 c_1 x+36 \left (1+c_1{}^2\right )},x-\frac {\left (2 x^3-3 x^2+6 x-6 \log (x+1)+6 c_1\right ) \left (2 x^4-3 x^3+6 x^2+\sqrt {4 x^6-12 x^5+33 x^4+12 (-3+2 c_1) x^3-36 c_1 x^2-12 \left (2 x^3-3 x^2+6 x+6 c_1\right ) \log (x+1)+36 \log ^2(x+1)+72 c_1 x+36 \left (1+c_1{}^2\right )}-6 x \log (x+1)+6 c_1 x\right )}{4 x^6-12 x^5+33 x^4+12 (-3+2 c_1) x^3-36 (-1+c_1) x^2-12 \left (2 x^3-3 x^2+6 x+6 c_1\right ) \log (x+1)+36 \log ^2(x+1)+72 c_1 x+36 \left (1+c_1{}^2\right )}\right ) y(x)\to \tan ^{-1}\left (-\frac {6 \left (-2 x^4+3 x^3-6 x^2+\sqrt {4 x^6-12 x^5+33 x^4+12 (-3+2 c_1) x^3-36 c_1 x^2-12 \left (2 x^3-3 x^2+6 x+6 c_1\right ) \log (x+1)+36 \log ^2(x+1)+72 c_1 x+36 \left (1+c_1{}^2\right )}+6 x \log (x+1)-6 c_1 x\right )}{4 x^6-12 x^5+33 x^4+12 (-3+2 c_1) x^3-36 (-1+c_1) x^2-12 \left (2 x^3-3 x^2+6 x+6 c_1\right ) \log (x+1)+36 \log ^2(x+1)+72 c_1 x+36 \left (1+c_1{}^2\right )},x-\frac {\left (2 x^3-3 x^2+6 x-6 \log (x+1)+6 c_1\right ) \left (2 x^4-3 x^3+6 x^2-\sqrt {4 x^6-12 x^5+33 x^4+12 (-3+2 c_1) x^3-36 c_1 x^2-12 \left (2 x^3-3 x^2+6 x+6 c_1\right ) \log (x+1)+36 \log ^2(x+1)+72 c_1 x+36 \left (1+c_1{}^2\right )}-6 x \log (x+1)+6 c_1 x\right )}{4 x^6-12 x^5+33 x^4+12 (-3+2 c_1) x^3-36 (-1+c_1) x^2-12 \left (2 x^3-3 x^2+6 x+6 c_1\right ) \log (x+1)+36 \log ^2(x+1)+72 c_1 x+36 \left (1+c_1{}^2\right )}\right ) y(x)\to -\frac {\pi }{2} y(x)\to \frac {\pi }{2} \end{align*}