Skip to content

Select theme

Menu

Introduction
Settings
Common Calculations
Result Formats
Expression Details
Graphing
Custom Functions
Solver
Complex Numbers - COMPLEX mode
- Complex Number Calculation
- Converting Complex To Polar Form
Calculus
Calculation History
Table
Matrix Calculation
Vector Calculation
Statistics
Distribution
Programming - Symja Language
Base Number Calculation
Keymap customization
Unit Conversion
Other Calculation
- SI Metric System / Engineer symbols
- Roman Number

Select theme

Getting Started
Tutorial
Reference
Functions

Select theme

On this page

Overview
- Examples

On this page

Overview
- Examples

Try CalcES Scientific Calculator Online

Reals

Reals

is the set of real numbers.

Examples

>> Refine(D(Abs(x),x), Element(x, Reals))
x/Abs(x)

>> Element(Infinity,Reals)
False

Previous
RealValuedNumberQ Next
Reap

Feedback

Tell us anything that can be improved

Your Email (optional)

Providing your email helps us follow up with you to resolve your issue more effectively.

Please include a valid email address so we can get back to you

Thank You for Your Feedback!

Thank you for taking the time to share your thoughts with us. Your feedback is invaluable and helps us improve our services. We appreciate your input and are committed to making your experience better. If you have any further comments or questions, please feel free to reach out to us.

Best regards,

MathDA Team ❤❤❤