2.39 problem 39

Internal problem ID [7480]

Book: Second order enumerated odes
Section: section 2
Problem number: 39.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [_linear]

\[ \boxed {y^{\prime }+y \cot \left (x \right )=2 \cos \left (x \right )} \]

Solution by Maple

Time used: 0.0 (sec). Leaf size: 17

dsolve(diff(y(x),x)+y(x)*cot(x)=2*cos(x),y(x), singsol=all)
 

\[ y \left (x \right ) = \frac {-\frac {\cos \left (2 x \right )}{2}+c_{1}}{\sin \left (x \right )} \]

Solution by Mathematica

Time used: 0.082 (sec). Leaf size: 20

DSolve[y'[x]+y[x]*Cot[x]==2*Cos[x],y[x],x,IncludeSingularSolutions -> True]
 

\[ y(x)\to -\frac {1}{2} \csc (x) (\cos (2 x)-2 c_1) \]