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**1. The problem statement, all variables and given/known data**

given the following functions:

y(x)= Acos(kx)

y(x)=A sin(kx)-Acos(kx)

y(x)=Acos(kx)+iAsin(kx)

y(x)=A d(x-x0)

Which are eigenfunctions of the position, momentum, potential energy,kinetic energy, hamiltonian, and total energy operators

**2. Relevant equations**

y(x) is supposed to be [tex]\psi[/tex](x)

**3. The attempt at a solution**

I have a list of the operators in my book, but am unsure what the question is asking for...I know that operators are supposed to be multiplied to functions and the result is the functions times a constant. I am a little cloudy on the understanding and need a little bit of help clearing it up.