\[ y(x) (l+P(x))+y''(x)=0 \] ✗ Mathematica : cpu = 0.170249 (sec), leaf count = 0
DSolve[(l + P[x])*y[x] + Derivative[2][y][x] == 0,y[x],x]
, could not solve
DSolve[(l + P[x])*y[x] + Derivative[2][y][x] == 0, y[x], x]
✗ Maple : cpu = 0. (sec), leaf count = 0
dsolve(diff(diff(y(x),x),x)+(P(x)+l)*y(x)=0,y(x))
, result contains DESol or ODESolStruc
\[y \left (x \right ) = \mathit {DESol}\left (\left \{\left (P \left (x \right )+l \right ) \textit {\_Y} \left (x \right )+\frac {d^{2}}{d x^{2}}\textit {\_Y} \left (x \right )\right \}, \left \{\textit {\_Y} \left (x \right )\right \}\right )\]