how don you find write the domain of a function
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The range of a function is the set of all of the possible values that it can take on as an output value. You find the range by inspecting the function and seeing first what the domain is, and then what the range would be for that domain. The domain, then, is the set of all of the possible values that it can take on as an input value.
No, when the domain repeats it is no longer a function
Domain of the logarithm function is the positive real numbers. Domain of exponential function is the real numbers.
FromA function is a relation between a given set of elements called the domain and a set of elements called the co-domain. The function associates each element in the domain with exactly one element in the co-domain. The elements so related can be any kind of thing (words, objects, qualities) but are typically mathematical quantities, such as real numbers.An example of a function with domain {A,B,C} and co-domain {1,2,3} associates A with 1, B with 2, and C with 3. An example of a function with the real numbers as both its domain and co-domain is the function f(x) = 2x, which associates every real number with the real number twice as big. In this case, we can write f(5) = 10.
The domain of a function is the set of numbers that can be valid inputs into the function. Expressed another way, it is the set of numbers along the x-axis that have a corresponding solution on the y axis.