Sharks, grizzly bears and big cats may strike fear into your heart and limbic brain, but they do not even come close to being the deadliest animals on earth. Of the top ten deadliest creatures to humans most are smaller than a silver dollar! One of the few with scary fangs will likely surprise you.
Functions assign outputs to inputs. The domain of a function is the set of all possible inputs for the function. For example, the domain of f(x)=xÂ² is all real numbers, and the domain of g(x)=1/x is all real numbers except for x=0. We can also define special functions whose domains are more limited.
Recall that for a function f defined by an expression in terms of a variable x, the domain of f is the set of all real numbers x can take such that the expression defining the function is real. The range of f is the set of all values that the function takes when x takes the values given in the domain. f(x) = x2 + 6.