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How are a reasonable domain and range determined for a function?
Wiki User
∙ 13y ago
By having some knowledge about the functions involved. The natural domain is the domain for which the function is defined. For example (assuming you want to work with real numbers):
The square root of x is only defined for values of x greater or equal to zero. The corresponding range can also be zero or more.
The sine function is defined for all real numbers. The values the function can take (the range), however, are only values between -1 and 1.
A rational function (a polynomial divided by another polynomial) is defined for all values, except those where the denominator is zero. Determining the range is a bit more complicated here.
Wiki User
∙ 13y ago
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Domain and range of a function?
The domain of a function determines what values of x you can plug into it whereas the range of a function determines the values that are your results. Therefore, look at the y-axis if you want to determine the range of a function and look at the x-axis if you want to determine the domain.
How do you find the range with the domain?
Find the range of a function by substituting the highest domain possible and the lowest domain possible into the function. There, you will find the highest and lowest range. Then, you should check all the possible cases in the function where a number could be divided by 0 or a negative number could be square rooted. Remove these numbers from the range. A good way to check to see if you have the correct range is to graph the function (within the domain, of course).
The number 5 is in both the domain and the range of the function A?
true
What best describes the domain of a function?
The range of a function is the set of all possible input values.
What is the range of the function y equals x2 plus 1?
The answer depends on the domain. If the domain is the whole of the real numbers, the range in y ≥ 1. However, you can choose to have the domain as [1, 2] in which case the range will be [2, 5]. If you choose another domain you will get another range.
How does the domain relate to a function?
Any function is a mapping from a domain to a codomain or range. Each element of the domain is mapped on to a unique element in the range by the function.
What is the domain of the range?
The domain and range are two different sets associated with a relationship or function. There is not a domain of a range.
What are the domain and range of the function?
The domain of a function is the set of values for which the function is defined.The range is the set of possible results which you can get for the function.
How do you find the range of the function with the given domain?
The domain of the function 1/2x is {0, 2, 4}. What is the range of the function?
How can you find the domain and range of a function?
The domain is a subset of the values for which the function is defined. The range is the set of values that the function takes as the argument of the function takes all the values in the domain.
How can you determine the domain and range of a rational number?
A number does not have a range and domain, a function does.
What is the domain of the graph of y -x2 6x 11?
Whatever you choose. The function, itself, imposes no restrictions on the domain and therefore it is up to the person using it to define the domain. Having defined the domain, the codomain, or range, is determined for you.
How do you determined if a relation is a function?
For every element on the domain, the relationship must allocate a unique element in the codomain (range). Many elements in the domain can be mapped to the same element in the codomain but not the other way around. Such a relationship is a function.
How do you identify the domain and range?
Domain is a set in which the given function is valid and range is the set of all the values the function takes
When you compose two functions the domain and the range of the original function does influence the domain and the range of their composition?
The domain and range of the composite function depend on both of the functions that make it up.
What are the domain range and asymptote of h(x) (1.4)x 5?
The question cannot be answered for two reasons. The first is that, thanks to the inadequacies of the browser that you are required to use, most mathematical symbols are lost and o we cannot tell what the function is meant to be.Second, the domain and range of any function are interdependent but indeterminate. You can define one of them and the other is determined. For example, whatever the above function, you could choose to have the domain as positive integer values of x. Only. The range would then be determined.
What is the relationships between inverse functions?
The inverse of the inverse is the original function, so that the product of the two functions is equivalent to the identity function on the appropriate domain. The domain of a function is the range of the inverse function. The range of a function is the domain of the inverse function.
