We can use interval notation to show that a value falls between two endpoints. For example, -3≤x≤2, [-3,2], and {x∈ℝ|-3≤x≤2} all mean that x is between -3 and 2 and could be either endpoint.

Yes, though you may need to use less than or equal to and less than symbols instead. It depends on the graph and the interval you are describing.

They'll probably give you a function and ask you to write out the intervals on which it increases and decreases. You'll have to then show the whole process of taking derivatives, finding …

, Is there some way to write both results as an interval? Or should it be separately? (-∞, 2/3); [2, ∞) • (15 votes) Upvote

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Highlight intervals on the domain of a function where it's only increasing or only decreasing.

If a line has a positive slope, then it moves upwards as the line move left to right. Now, apply these same ideas to other types of graphs. If the graph is moving downward, then that is a …

Summation notation (or sigma notation) allows us to write a long sum in a single expression. While summation notation has many uses throughout math (and specifically calculus), we …

So we say, so I'm gonna first talk about an open interval, and then we're gonna talk about a closed interval because a closed interval gets a little bit more involved.

Writing a division in multiplication is easy: We take the quotient, in our case, b, and the divisor, x, and set them equal to our dividend, n: n=x•b. Seem familiar?