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A particle with the energy \( E \) is incident from the left on a potential step of height \( U_0 \) and a delta-functional peak at \( x = 0 \):

\[
U(x) = 0, \quad x < 0
\]

\[
U(x) = U_0 + V \delta(x), \quad x \geq 0
\]

Calculate the transmission and reflection coefficients at the energies \( E > U_0 \).

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