Show that E must exceed the minimum value of V(x) , for every normalizable solution to the time-independent Schrdinger equation. What is the classical analog

Show that E must exceed the minimum value of V(x) , for every normalizable solution to the time-independent Schrödinger equation. What is the classical analog to this statement?

if E min, then Ψ and its second derivative always have the same sign—argue that such a function cannot be normalized.

dy dx 2m 62 [V (x) E] y;