✓ Mathematica : cpu = 0.0298893 (sec), leaf count = 18
DSolve[(-v^2 + x^2)*y[x] + x*Derivative[1][y][x] + x^2*Derivative[2][y][x] == 0,y[x],x]
✓ Maple : cpu = 0.013 (sec), leaf count = 15
dsolve(x^2*diff(diff(y(x),x),x)+x*diff(y(x),x)+(-v^2+x^2)*y(x)=0,y(x))