12*epsilon*Vx,t
2+1
*d4d*x4*Vx,t
+Ux,t
+48*epsilon*Vx,t
*dd*x*Vx,t
+Ux,t
*d3d*x3*Vx,t
+Ux,t
+36*epsilon*Vx,t
*d2d*x2*Vx,t
+Ux,t
2+36*epsilon*dd*x*Vx,t
+Ux,t
2*d2d*x2*Vx,t
+Ux,t
+12*epsilon*Vx,t
2+1
*d4d*x4*Ux,t
−Vx,t
−48*epsilon*Vx,t
*dd*x*Ux,t
−Vx,t
*d3d*x3*Ux,t
−Vx,t
−36*epsilon*Vx,t
*d2d*x2*Ux,t
−Vx,t
2+36*epsilon*dd*x*Ux,t
−Vx,t
2*d2d*x2*Ux,t
−Vx,t