I am having difficulty undersanding the pattern when working with operators which is part of the work to evaluate <x^2>. See attached jpg.
Likewise the same with evaluating
On that basis,
The first 2 calculations are wrong by my lectures notes, so obviously dont understand the definition.
For example, it there is an adding operator, I will sum it with n. Ie, adding a_+ operator to n+1 gives n+2, subtracting a_- to n gives n-1 etc.....