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Apply the superposition principle to write the wave
function of the particle immediately after the expansion in terms of
the eigenstates
of the new, widened well as 
Determine the constants 
in the sum. (Hint:
exploit the orthogonality condition 
to
determine 
,
and note 
.)
Prof. Tomas Alberto Arias
Thu Oct 12 17:16:14 EDT 1995