Hi, I'm traying to maje a double integrate of **P(A(t+Deltat),A(t)) ,** the first one in in untion of dA(t) and the second one is in fuction of dA(t+ DeltaT). How can I indicate in Maple Deltat? Is it possible to integrate in function of A(t)?

All variables are constant, except A(t) and A(t + Deltat),

**> F:=proc()**