domain of a function

It could be most of the real numbers except it The set of values to which is sent by the function is called the range. for only a small subset of real numbers, or for some other You can use as many "U" symbols as necessary if the domain has multiple gaps in it. As an example of a domain defined explicitly, let's say I give you the expression: Here I tell you that x must be greater than 0. To find the range of a function, first find the x-value and y-value of the vertex using the formula x = -b/2a. References. So this gets to the essence of what domain is. If our input was pi, then we input into our function and then Quiz. Algebraic Interpretation of this example: 1. These won't be terribly useful or interesting functions and relations, but your text wants you to get the idea of what the domain and range of a function are. For example, [-1,5) U (5,10]. This means that the domain goes from -1 to 10, inclusive, but that there is a gap in the domain at 5. Tip: Become familiar with the shapes of basic functions like sin/cosine and polynomials. Thanks to all authors for creating a page that has been read 1,742,770 times. {"smallUrl":"https:\/\/www.wikihow.com\/images\/thumb\/a\/a2\/Find-the-Domain-of-a-Function-Step-1-Version-4.jpg\/v4-460px-Find-the-Domain-of-a-Function-Step-1-Version-4.jpg","bigUrl":"\/images\/thumb\/a\/a2\/Find-the-Domain-of-a-Function-Step-1-Version-4.jpg\/aid2163281-v4-728px-Find-the-Domain-of-a-Function-Step-1-Version-4.jpg","smallWidth":460,"smallHeight":345,"bigWidth":"728","bigHeight":"546","licensing":"