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Input:
re2D(dn(x))
Write:
`re2D(dn(x))`
Compute:
$$re2D(dn(x))$$
Output:
$$re2D(dn(x))== re(dn(x))\ and\ im(dn(x))$$
Result: $$re(dn(x))\ and\ im(dn(x))$$
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