Sunday, October 13, 2019

quantum mechanics - Commutators involving functions


I am looking for the commutator: [eaq,p] My approach is to Taylor expand the function: [n1n!(aq)n,p] I know that [qn,p]=niqn1 So how do I account for n commutators?




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classical mechanics - Moment of a force about a given axis (Torque) - Scalar or vectorial?

I am studying Statics and saw that: The moment of a force about a given axis (or Torque) is defined by the equation: $M_X = (\vec r \times \...