✗ Mathematica : cpu = 0.115723 (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