And I could put these curlyīrackets around like this. Sometimes you might see things written a little bit more math-y. These brackets tell us that we include, thisīracket on the left says that we include negative three,Īnd this bracket on the right says that we include Talking about the interval between, and we can use brackets because it's a closed interval, negative three and two, and once again I'm using brackets here, Another way that we couldĭepict this closed interval is we could say, okay, we're Than or equal to positive two, so that means that x couldīe equal to positive two, so it is a closed interval. That x could be equal to, that x could be equal to negative three.
![calcpad interval notation calcpad interval notation](https://musicnotation.org/wp-content/uploads/2013/03/4-4-4_NotationIntervals.png)
Three is less than or equal to x so that's telling us I could say these are all of the x's that are between negative three and two. Let's say this number line is showing different values for x. And I just showed you how I can depict it on a number line, by actuallyįilling in the endpoints and there's multiple ways to talk about this interval mathematically. And when you include the endpoints, this is called a closed interval. Negative three and two are part of this interval. So this right over here, I'mįilling negative three and two in, which means that Negative three and two, then I would fill them in. Negative three and two, or maybe I'm just including one of them.
![calcpad interval notation calcpad interval notation](https://showme0-9071.kxcdn.com/files/672980/pictures/thumbs/2277986/last_thumb1454551837.jpg)
Am I including negative three and two, or am I not including I care about all the numbersįrom negative three to two. Let's say I wanted to talkĪbout the interval on the number line that goes from That we can show an interval, or interval notation. To do in this video is get familiar with the notion of an interval, and also think about ways