Problem 12 What is a variable?... [FREE SOLUTION]

Chapter 2: Problem 12

What is a variable?

Short Answer

Expert verified

Answer: A variable is a symbol or a letter, usually from the alphabet, that represents a value that can change or vary. In mathematics, variables often represent unknown quantities or numbers, and they can play the role of placeholders. Variables are significant because they help represent unknown values, generalize relationships and patterns, formulate mathematical models, and solve problems in fields like physics, engineering, economics, and many more.

Step by step solution

Define Variable

A variable is a symbol or a letter, usually from the alphabet (e.g., x, y, z, a, b, c), that represents a value that can change or vary. In mathematics, variables often represent unknown quantities or numbers. Variables can also be placeholders for values that may be provided or altered within a problem.

Provide Examples

Here are some examples of variables in mathematical expressions and equations: 1) In the expression 2x + 3y, the variables are x and y. 2) In the equation x^2 + 3x + 2 = 0, the variable is x.

Explain the Significance of Variables

Variables are essential elements in mathematics and various fields such as algebra, calculus, and statistics. They help to: 1) Represent unknown values or quantities that need to be solved for. 2) Generalize relationships and patterns between quantities, like in a function y = f(x). 3) Formulate mathematical models and solve problems in fields like physics, engineering, economics, and many more. 4) Create formulas and describe a range of values for certain parameters (e.g., columns in a dataset).

Unlock Step-by-Step Solutions & Ace Your Exams!

Full Textbook Solutions
Get detailed explanations and key concepts
Unlimited Al creation
Al flashcards, explanations, exams and more...
Ads-free access
To over 500 millions flashcards
Money-back guarantee
We refund you if you fail your exam.

Over 30 million students worldwide already upgrade their learning with 91影视!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Recommended explanations on Computer Science Textbooks

View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

91影视

What is a variable?

Short Answer

Step by step solution

Define Variable

Provide Examples

Explain the Significance of Variables

One App. One Place for Learning.

Most popular questions from this chapter

Recommended explanations on Computer Science Textbooks

Functional Programming

Computer Systems

Theory of Computation

Problem Solving Techniques

Computer Programming

Algorithms in Computer Science

Study anywhere. Anytime. Across all devices.