1. ## Range notation

Here is what my book says:

If the range of a function is (–5, 5), this means that –5 is included in the range, but 5 is not. (The range is said to be “inclusive” of –5 but exclusive of 5.)

Is this true? I've never heard of this before.

2. ## Re: Range notation

Originally Posted by benny92000
Here is what my book says:

If the range of a function is (–5, 5), this means that –5 is included in the range, but 5 is not. (The range is said to be “inclusive” of –5 but exclusive of 5.)

Is this true? I've never heard of this before.
Absolutely not.

Square brackets [] are inclusive, round brackets () are exclusive.

So if -5 is included and 5 is excluded, then the range is [-5, 5).

3. ## Re: Range notation

Too many typos in this book. Actually, it's not a book, it's a SparkNotes online test for Math level 2 SAT. But thank you.