Algebra 8 - Unions of Intervals

Interval notation is often the simplest way to describe sets of real numbers as regions on the number line. Some sets which cannot be represented by a single interval can be written in interval notation as the union of two or more intervals.

[anirudhvaid]

i am a student of class 11th in India and i seriously want more videos on various topics like calculus and geometry. Your videos are very direct and informative and whyu is simply wonderful. Please upload more videos.

[nuggbubbler]

man this would've made pre-algebra and algebra so much easier to conceptualize back in middle/high school.

[veronicaperez]

The intervals help us capture a meaning on a number line. In this video they explain in detail the steps so that we can not get confused and understand how to place them.

[arianatorres]

Intervals can help us to place every number on a set and to know how is the union of each on, and how is placed an interval between every number at sets. And this video give us a complex explanation of how intervals are situated on sets. In a few words intervals are the union of the numbers.

[paolocorelli]

would it be possible to have in the future similar courses on differential calculus, integrals and so on?

[jnb]

where is the next video 2 dimensions? I would love to watch that one as well

[readytowearpyjamas]

The intervals help us capture a meaning on a number.

[tanzimaakter]

Hi, I am adding with you from Bangladesh.

[skarlethzelaya]

Is a very usefull video i like it becuase it shows us mathematics as very simple as is it, i learned many things and in a better way

[RussellMinecraft]

Has it really taken 40 videos to get to graphs...

[cherry_]

How do we know if the points are unbounded or bounded?

[musicviolamusician]

Yea..still confused I’m stuck on a problem: (1, 10] U (5, infinity) how would it look on a number line? Would it have 3 separate points?

[moonjen]

Why line is an one-dimensional object?

[latestnewsu]

omg he said someone can I have yur autograph

[revolutionnaman]

would it be possible to have in the future similar courses on differential calculus, integrals and so on?