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A function may be defined over only certain values. That is, it may have only a certain set of values that can serve as input. For example, in elementary mathematics, the principal square root is only defined for non-negative real numbers. This is the "area" over which the function is valid and so it is called the domain.
The mathematical term for the set of output values is actually the co-domain, but many people refer to it as the range.
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How do you describe the domain and range of a function?
The domain is the set of values of the input while the range is the set of output values.
What are domain and range in math?
The domain of a function is a set of input values that make the function work, usually symbolized by an 'X'. The range. The range is the output values that result from using the function, usually symbolized by a 'Y'.
Does every function have a domain and range?
yes, bcoz evey function gives some output for input. Except constant function.
What is the domain of a discrete function?
The domain is the possible values that can be input into the function and produce a real number output.
How do you identify the range of a function in math?
It can be quite hard. First determine the domain. Then, for every input value from the domain, calculate the output value. The set of all these output values is the range. For simple functions you will not need to find every output value. For monotonic continuous functions the end points of the domain will determine the endpoints of the range. [Monotonic means never decreasing or never increasing]. For non-monotonic functions, for example a quadratic or polynomial of higher order, you may need to find the turning points.
