ODE No. 370

\[ -f(x)^2+y'(x)^2+y(x)^2=0 \] Mathematica : cpu = 13.1611 (sec), leaf count = 0

DSolve[-f[x]^2 + y[x]^2 + Derivative[1][y][x]^2 == 0,y[x],x]
 

, could not solve

DSolve[-f[x]^2 + y[x]^2 + Derivative[1][y][x]^2 == 0, y[x], x]

Maple : cpu = 0. (sec), leaf count = 0

dsolve(diff(y(x),x)^2+y(x)^2-f(x)^2 = 0,y(x))
 

, could not solve

dsolve(diff(y(x),x)^2+y(x)^2-f(x)^2 = 0,y(x))