A
A.(-V_{t}( t,x) =max_{u}{ -(u(t))^2 +V_{x}( t,x)u(t)},onumber V( T,x) =-x(T))
B
B.(-V_{t}( t,x) =max_{u}{ (u(t))^2 -V_{x}( t,x)u(t)} ,onumber V( T,x) =-x(T))
C
C.(-V_{t}( t,x) =max_{u}{ -(u(t))^2 +V_{x}( t,x)u(t) } ,onumber V( T,x) =x(T))
D
D.(-V_{t}( t,x) =max_{u}{ (u(t))^2 +V_{x}( t,x)u(t)} ,onumber V( T,x) =-x(T))