The natural domain of a formula is the set of values for which it is defined, typically within the reals but sometimes among the integers or complex numbers. For instance the natural domain of square root is the non-negative reals when considered as a real number function. When considering a natural domain the set of possible values of the function is typically called its range.
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Famous quotes containing the words natural and/or domain:
“We do not want them to have less.
But it is only natural that we should think we have not enough.
We drive on, we drive on.
When we speak to each other our voices are a little gruff.”
—Gwendolyn Brooks (b. 1917)
“No domain of nature is quite closed to man at all times.”
—Henry David Thoreau (1817–1862)