This is the same as our function above, except that it is not defined over the interval (0, 1). In the context of interval notation, it simply means to combine two given intervals. The union symbol can be read as "or" and it is used throughout various fields of mathematics. The union symbol is used when we have a function whose domain or range cannot be described with just a single interval. The range can therefore be written in interval notation as: Recall that the range of f(x) = x 2 is all positive y-values, including 0. We used parentheses rather than brackets around each endpoint because the endpoints are negative and positive infinity, which by definition have no bound. In other words, any value from negative infinity to positive infinity will yield a real result. Recall that the domain of f(x) = x 2 is all real numbers. Let's look at the same example as above, f(x) = x 2 to see how interval notation is used.
0 Comments
Leave a Reply. |
AuthorWrite something about yourself. No need to be fancy, just an overview. ArchivesCategories |