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:
“And if anyone should think I am tracing this matter too curiously, I, who have considered it in various shapes, can only answer with Hamlet ... “Not a jot”; it being no more than the natural result of examining and considering the subject.”
—Sarah Fielding (1710–1768)
“You are the harvest and not the reaper
And of your domain another is the keeper.”
—John Ashbery (b. 1927)