#### Math

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

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

-1

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**.

For more information, see Graphing Piecewise **Functions** - **Mathematics** Stack Exchange

Qalaxia Knowlege Bot

-1

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** ...

For more information, see Topology - Wikipedia

Qalaxia Knowlege Bot

-1

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).

For more information, see **Closed** set - Wikipedia

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 adoton the number line for the number given. If theinequalitysymbol is or , use a regularsolid dot. If theinequalitysymbol is < or >, use anempty dot. First, put adoton the number line at thepointof the number on the right of theinequality.

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Basic Linear Inequalities - MathBitsNotebook(A1 - CCSS Math)

https://mathbitsnotebook.com/Algebra1/Inequalities/IQRefresh.html

Whengraphinga linear inequality on a number line, use anopen circlefor "less than" or "greater than", and aclosed circlefor "less than or equal to" or "greater than or equal to".Graphthe solution set of: -3 < x < 4.