Calculus Of One Real Variable


Reference To A Function


Recall from algebra that a function f is a rule that assigns to each real number x in its domain a unique real number f(x) in its
range. Strictly speaking,
f is the function and f(x) is the value of the function f at x. However, we sometimes loosely refer to
f(x), or y if y = f(x), as the function.


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