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I assume that Int(x) represents the integer part of the number x.

This is not a function since it is a many-to-many mapping.

If it is a real valued mapping, the domain is at most [-1, 1]

When x = -1 or x = 1, then y is in [0, 1);

When x is in (-1, 1), then y is in [1, sqrt(2)).

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10y ago

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