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# Prove the relationship [x,px]=ih

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Prove the relationship [x,px]=ih, where px =-ihd/dx. Namely, show that applying the commutator [x,px] to any function f(x) is equal to multiplying ih to f(x).

##### Solution Summary

The expert proves the relation of a function. The commutator function is applied. The solution is given in a step-by-step equational process.

##### Solution Preview

Because,
[A,B] = A B - B A

hence,
[x,px] = x px - px x = x(-ihd/dx) - (-ihd/dx)x
= -ih x ...

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• BEng, Allahabad University, India
• MSc , Pune University, India
• PhD (IP), Pune University, India
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