The set of all real numbers (R) is the set of all rational and Irrational Numbers. The set R has no restrictions in its domain and so includes (-∞, ∞).
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All real numbers.
domain is set of real numbers range is set of real numbers
In the complex field, the domain and range are both the whole of the complex field.If restricted to real numbers, the domain is x >= 4 and y can be all real numbers >= 0 or all real numbers <= 0 [or some zigzagging pattern of that set].
The domain is any subset of the real numbers that you choose, The range is the set of all values that the points in the domain are mapped to.
all real numbers