下列选项中,能够正确定义一个函数的是（） A: a():<br/>print("function") B: DEF a():<br/>print("function") C: def a():<br/>print("function") D: def a:<br/>print("function")

A system of electrons is described by a wave function should be (  )

Which of the following statement about Time-independent Schrödinger equation is not true? A: It is satisfied by a wave function that is an eigenfunction of the Hamiltonian of the system. B: Any solution of this equation corresponds to a physically acceptable state of the system. C: An eigenvalue may correspond to several linearly independent eigenfunctions. D: Energy levels represent eigenvalues of this equation.

to function, function, functional:[br][/br]Gestures serve an important_______ in communication across cultures.

Which of the following is not required for a function to be well-behaved wave function？ A: It has to be continuous. B: It has to have the same value for an angular variable α and for α + 2π. C: It must not tend to infinity. D: It must be a real function.