Unformatted text preview: of conservation of momentum.) Show that T π/ 2 turns sin( x ) into cos( x ). Answer: Using various standard trig manipulations, [1, pp. 4344]: T π/ 2 sin( x ) = sin p x + 1 2 π P = cos( − x ) = cos( x ) . Or just compare the graphs visually, [1, p. 43]. 2.4.4 Solution mathopsd Question: The inversion operator Inv turns f ( x ) into f ( − x ). It plays a part in the question to what extent physics looks the same when seen in the mirror. Show that Inv leaves cos( x ) unchanged, but turns sin( x ) into − sin( x ). Answer: According to [1, p. 43], cos( − x ) = cos( x ), but sin( − x ) = − sin( x ). Compare also the graphs of the functions on the same page; Inv ±ips the graph of a function over around the yaxis....
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This note was uploaded on 01/06/2012 for the course PHY 3604 taught by Professor Dr.danielarenas during the Fall '11 term at UNF.
 Fall '11
 Dr.DanielArenas
 mechanics

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