1.79 problem 79

Internal problem ID [7660]

Book: Differential Gleichungen, E. Kamke, 3rd ed. Chelsea Pub. NY, 1948
Section: Chapter 1, linear first order
Problem number: 79.
ODE order: 1.
ODE degree: 1.

CAS Maple gives this as type [y=_G(x,y')]

Solve \begin {gather*} \boxed {y^{\prime }+f \relax (x ) \cos \left (a y\right )+g \relax (x ) \sin \left (a y\right )+h \relax (x )=0} \end {gather*}

Solution by Maple

dsolve(diff(y(x),x) + f(x)*cos(a*y(x)) + g(x)*sin(a*y(x)) + h(x)=0,y(x), singsol=all)
 

\[ \text {No solution found} \]

Solution by Mathematica

Time used: 0.0 (sec). Leaf size: 0

DSolve[y'[x] + f[x]*Cos[a*y[x]] + g[x]*Sin[a*y[x]] + h[x]==0,y[x],x,IncludeSingularSolutions -> True]
 

Not solved