suppose that the vector field F satisfies Div F = 0 and Curl F = 0 on R3(3-Dimensional). Show that there exist scalar function f such that F = gradient f where gradient^2 f = 0
suppose that the vector field F satisfies Div F = 0 and Curl F = 0 on R3(3-Dimensional). Show that there exist scalar function f such that F = gradient f where gradient^2 f = 0