AP Notes, Outlines, Study Guides, Vocabulary, Practice Exams and more!

General topology

Algebra 2

Subject: 
Rating: 
0
No votes yet
Tags: 
. A subset of the real numbers is closed under addition if, for any two numbers, a and b, that are members of the subset, the number is also a member of the subset. Tell whether each of the following subsets of the real numbers is closed under addition. If it is not, give an example that shows it is not. a. The set of whole numbers b. The set of negative integers c. The set of irrational numbers d. The set of rational numbers 2. For each of the sets in Problem 1, tell whether the set is closed under multiplication. If it is not, give an example that shows it is not. 3. a. For each of the following pairs of rational numbers, and find the rational number and write the 3 rational numbers in increasing order. (i) (ii) (iii) (iv)
Subscribe to RSS - General topology

Need Help?

We hope your visit has been a productive one. If you're having any problems, or would like to give some feedback, we'd love to hear from you.

For general help, questions, and suggestions, try our dedicated support forums.

If you need to contact the Course-Notes.Org web experience team, please use our contact form.

Need Notes?

While we strive to provide the most comprehensive notes for as many high school textbooks as possible, there are certainly going to be some that we miss. Drop us a note and let us know which textbooks you need. Be sure to include which edition of the textbook you are using! If we see enough demand, we'll do whatever we can to get those notes up on the site for you!