- Homework Statement
Suppose an electron is in a spin state that can be described by
where + and – are eigenstates of Sz with eigenvalue +ℏ/2 and −ℏ/2.
If we measure z-component of spin of this electron, what is the probability of measuring spin up, +ℏ/2?
Answers within 5% error will be considered correct.
- Relevant Equations
- I myself want to know which formula we need to use.
I was not able to attempt since I don't know which formula or method can be used to solve the problem