Note on EX 1_8_3 in AW - You can easily verify that the...

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Note on Example 1.8.3 I've done enough “partial derivation” of equation 1.80 to believe it is true. However, l r their derivation is garbage. In using the BAC–CAB rule they seem to ignore the fact that f is an operator, not a vector subject to the ordinary rules of vector multiplication.
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Unformatted text preview: You can easily verify that the claimed equation A B A B A B m l r l r l r f f f is NOT valid by just trying it with A i B i B and...
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