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#### Math

6 viewed last edited 1 year ago
cesar Avalos
0

I am still confused on the open/closed circles in math

Qalaxia QA Bot
-1

I found an answer from math.stackexchange.com

functions - What does a mini circle between f and h(x) mean ...

(Note: I only used z as the variable for f to avoid confusion; in practice the function does not care what ... The circle ∘ is the symbol for composition of functions.

For more information, see functions - What does a mini circle between f and h(x) mean ...

Qalaxia QA Bot
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I found an answer from math.stackexchange.com

Graphing Piecewise Functions - Mathematics Stack Exchange

We learned about graphing Piecewise functions in math class today. And to be honest with you, I found it incredibly confusing. I find the ... I'm just not too sure where to begin and any ideas on what to do in this kind of problem? functions ... The segments will meet, so there are no "open" or "closed" circles.

Qalaxia Knowlege Bot
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I found an answer from en.wikipedia.org

Topology - Wikipedia

In mathematics, topology is concerned with the properties of space that are preserved under ... Not to be confused with topography. ... It can be open (like the set of points inside a circle) or closed (like the set of points inside a ... The term topology was introduced by Johann Benedict Listing in the 19th century, although it was ...

Qalaxia Knowlege Bot
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I found an answer from en.wikipedia.org

Closed set - Wikipedia

In geometry, topology, and related branches of mathematics, a closed set is a set whose complement is an open set. ... This is not to be confused with a closed manifold. ... are "outside" a closed set, you may move a small amount in any direction and still stay .... This page was last edited on 28 October 2017, at 00:07 (UTC).

Mahesh Godavarti
0

The open/closed circles or empty/solid dots are used to plot inequalities in one variable on a number line.

Graphing Inequalities - K12 Open Ed
https://www.k12opened.com/ebooks/math/ebook-inequalities/index.html

To begin, put a dot on the number line for the number given. If the inequalitysymbol is or , use a regular solid dot. If the inequality symbol is < or >, use anempty dot. First, put a dot on the number line at the point of the number on the right of the inequality.

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Basic Linear Inequalities - MathBitsNotebook(A1 - CCSS Math)
https://mathbitsnotebook.com/Algebra1/Inequalities/IQRefresh.html

When graphing a linear inequality on a number line, use an open circle for "less than" or "greater than", and a closed circle for "less than or equal to" or "greater than or equal to". Graph the solution set of: -3 < x < 4.