Quantum Mechanics Solution Manual |
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© Leon van Dommelen |
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2.4.4 Solution mathops-d
Question:
The inversion, or parity, operator
turns
into
. (It plays a part in the question to what extent physics looks the same when seen in the mirror.) Show that
leaves
unchanged, but turns
into 
.
Answer:
According to [1, p. 43],
, but

. Compare also the graphs of the functions on the same page;
flips the graph of a function over around the
-axis.