13.9 problem 55

Internal problem ID [10553]

Book: Handbook of exact solutions for ordinary differential equations. By Polyanin and Zaitsev. Second edition
Section: Chapter 1, section 1.2. Riccati Equation. subsection 1.2.6-5. Equations containing combinations of trigonometric functions.
Problem number: 55.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [_Riccati]

\[ \boxed {y^{\prime }-y^{2}-m y \cot \left (x \right )=b^{2} \sin \left (x \right )^{2 m}} \]

Solution by Maple

Time used: 0.016 (sec). Leaf size: 281

dsolve(diff(y(x),x)=y(x)^2+m*y(x)*cot(x)+b^2*sin(x)^(2*m),y(x), singsol=all)
 

\[ y \left (x \right ) = \frac {\sqrt {\left (\csc \left (x \right )^{2}\right )^{-m} \sin \left (x \right )^{4}}\, \left (-c_{1} \sin \left (\sqrt {\left (\csc \left (x \right )^{2}\right )^{-m} \sin \left (x \right )^{4}}\, \csc \left (x \right )^{2} \left (\csc \left (x \right )^{2}\right )^{\frac {m}{2}} \cot \left (x \right ) \operatorname {hypergeom}\left (\left [\frac {1}{2}, 1+\frac {m}{2}\right ], \left [\frac {3}{2}\right ], -\cot \left (x \right )^{2}\right ) b \right )+\cos \left (\sqrt {\left (\csc \left (x \right )^{2}\right )^{-m} \sin \left (x \right )^{4}}\, \csc \left (x \right )^{2} \left (\csc \left (x \right )^{2}\right )^{\frac {m}{2}} \cot \left (x \right ) \operatorname {hypergeom}\left (\left [\frac {1}{2}, 1+\frac {m}{2}\right ], \left [\frac {3}{2}\right ], -\cot \left (x \right )^{2}\right ) b \right )\right ) \left (\csc \left (x \right )^{2}\right )^{\frac {m}{2}} b \csc \left (x \right )^{6} \left (-\frac {\operatorname {hypergeom}\left (\left [\frac {3}{2}, 2+\frac {m}{2}\right ], \left [\frac {5}{2}\right ], -\cot \left (x \right )^{2}\right ) \cos \left (x \right )^{2} \left (m +2\right )}{3}+\operatorname {hypergeom}\left (\left [\frac {1}{2}, 1+\frac {m}{2}\right ], \left [\frac {3}{2}\right ], -\cot \left (x \right )^{2}\right ) \sin \left (x \right )^{2}\right )}{c_{1} \cos \left (\sqrt {\left (\csc \left (x \right )^{2}\right )^{-m} \sin \left (x \right )^{4}}\, \csc \left (x \right )^{2} \left (\csc \left (x \right )^{2}\right )^{\frac {m}{2}} \cot \left (x \right ) \operatorname {hypergeom}\left (\left [\frac {1}{2}, 1+\frac {m}{2}\right ], \left [\frac {3}{2}\right ], -\cot \left (x \right )^{2}\right ) b \right )+\sin \left (\sqrt {\left (\csc \left (x \right )^{2}\right )^{-m} \sin \left (x \right )^{4}}\, \csc \left (x \right )^{2} \left (\csc \left (x \right )^{2}\right )^{\frac {m}{2}} \cot \left (x \right ) \operatorname {hypergeom}\left (\left [\frac {1}{2}, 1+\frac {m}{2}\right ], \left [\frac {3}{2}\right ], -\cot \left (x \right )^{2}\right ) b \right )} \]

Solution by Mathematica

Time used: 5.352 (sec). Leaf size: 72

DSolve[y'[x]==y[x]^2+m*y[x]*Cot[x]+b^2*Sin[x]^(2*m),y[x],x,IncludeSingularSolutions -> True]
 

\[ y(x)\to \sqrt {b^2} \sin ^m(x) \tan \left (\frac {\sqrt {b^2} \sqrt {\cos ^2(x)} \sec (x) \sin ^{m+1}(x) \operatorname {Hypergeometric2F1}\left (\frac {1}{2},\frac {m+1}{2},\frac {m+3}{2},\sin ^2(x)\right )}{m+1}+c_1\right ) \]