Verify whether the following functions are valid potential functions.
(i) \(ϕ=A(X^2-Y^2)\)
(ii) ϕ = Acos x
1
Both are valid potential functions
2
Both are not valid potential functions
3
(i) Is not a valid function (ii) Is a valid potential function
4
(i) Is a valid potential function (ii) Not a valid function