Table of contents

0. Review of Algebra4h 18m
1. Equations & Inequalities3h 18m
2. Graphs of Equations43m
3. Functions2h 17m
4. Polynomial Functions1h 44m
5. Rational Functions1h 23m
6. Exponential & Logarithmic Functions2h 28m
7. Systems of Equations & Matrices4h 6m
8. Conic Sections2h 23m
9. Sequences, Series, & Induction1h 22m
10. Combinatorics & Probability1h 45m

0. Review of Algebra

Exponents

College Algebra

0. Review of Algebra

Exponents

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1:55 minutes

Problem 11

Textbook Question

Identify each set as finite or infinite. Then determine whether 10 is an element of the set. {4, 5, 6,...., 15}

Verified step by step guidance

Identify the type of sequence: The set {4, 5, 6, ..., 15} is an arithmetic sequence with a common difference of 1.

Determine the last element: The sequence ends at 15, making it a finite set.

Check if 10 is an element: Since the sequence starts at 4 and increases by 1 each time, check if 10 is between 4 and 15.

Verify inclusion: Since 10 is between 4 and 15 and follows the pattern of the sequence, it is an element of the set.

Conclude: The set is finite, and 10 is an element of the set.

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Key Concepts

Here are the essential concepts you must grasp in order to answer the question correctly.

Finite vs. Infinite Sets

A finite set contains a limited number of elements, while an infinite set has no bounds and continues indefinitely. For example, the set of integers is infinite, whereas the set of natural numbers from 1 to 10 is finite. Understanding this distinction is crucial for classifying sets correctly.

Set Notation

Set notation is a mathematical way to describe a collection of objects, called elements. Curly braces are used to denote sets, and ellipses (....) indicate a continuation of elements in a specific pattern. In the set {4, 5, 6,...., 15}, the notation signifies all integers from 4 to 15, inclusive.

Element of a Set

An element of a set is an individual object contained within that set. To determine if a number, such as 10, is an element of a set, one checks if it appears in the collection. In the case of the set {4, 5, 6,...., 15}, since 10 falls within the specified range, it is indeed an element of the set.