Plus-Minus Sign Symbol ±
The Mathematical Concept: Plus-Minus Sign (±)
The plus-minus sign (±) is a mathematical symbol used to represent two possible values, one positive and one negative. It is employed to express the uncertainty or ambiguity of a quantity, indicating that a variable can take on either of two values.
Usage and Notation
In mathematical notation, the plus-minus sign "±" is commonly used to express the two potential solutions of an equation or the range of possible values for a variable. For example:
- x = 3 ± 2
- y = √(9 ± 4)
In these examples, "±" indicates that the variable can take on both the positive and negative values of the specified quantity. It is often used in situations where there is uncertainty or a range of possible outcomes.
Representation in HTML
In HTML, the plus-minus sign "±" can be represented using the HTML entity ±.
Properties and Usage
The plus-minus sign is used in various mathematical contexts, including:
- Quadratic Equations: Expressing both roots of a quadratic equation.
- Measurement Uncertainty: Indicating a range of possible values for a measured quantity.
- Trigonometry: Representing multiple solutions in trigonometric equations.
Example
Consider the equation x2 - 5x + 6 = 0. The solutions can be expressed using the plus-minus sign:
x = (5 ± √(52 - 4(6))) / (2)
x = (5 ± √1) / 2
x = (5 ± 1) / 2
Therefore, the solutions are x = 3 and x = 2, represented as x = 3 ± 1.
The plus-minus sign "±" is a valuable mathematical symbol that conveys the dual nature of a variable, providing a concise representation of both positive and negative solutions or potential values. Its usage is prevalent in various mathematical disciplines and problem-solving scenarios.
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Plus-Minus Sign Symbol Information
| Symbol Name | Plus-Minus Sign |
| Unicode Version | 1.1 (June 1993) |
| Unicode | U+00B1 |
| CSS Code | \00B1 |
| HTML Entity | ± |
Plus-Minus Sign Symbol Encoding
| UTF-8 | 0xC2 0xB1 |
| UTF-16 | 0x00B1 |
| UTF-32 | 0x000000B1 |
Table of contents
- Plus-Minus Sign PNG and SVG files
- How to type plus-minus sign in latex
- How to type plus-minus sign on Microsoft Word
- How to type plus-minus sign on Microsoft Windows
- How to type plus-minus sign on Mac OS
- How to type plus-minus sign on Linux
- How to type plus-minus sign on IOS and Android
- How to use plus-minus sign in CSS
- How to use plus-minus sign in HTML
- Plus-Minus Sign representation in programming languages
Plus-Minus Sign symbol's PNG and SVG files
How to type plus-minus sign symbol in latex
\documentclass{article}
\begin{document}
\pm
\end{document}
How to add plus-minus sign symbol via keyboard on different Operating systems
You can type the plus-minus sign on most modern devices with the help of following methods:
How to type plus-minus sign symbol on Microsoft Word
You can type the plus-minus sign on microsoft Microsoft Word using steps mentioned below:
- Place your cursor in the text area where you need to insert the symbol and type 0 0 B 1
- Without moving the cursor press keys Alt + x together
- The original 0 0 B 1 is now transformed into ±
How to type plus-minus sign symbol on Microsoft Windows
You can type the plus-minus sign on Microsoft windows using following steps:
- Hold Alt and press to type plus-minus sign on your windows machine.
How to type plus-minus sign symbol on Mac OS
You can type the plus-minus sign on Mac OS using following steps:
- Place your cursor in the text area where you need to insert the symbol
- Press Ctrl + ⌘ Command + ⎵ Space to bring up the Character Viewer. Alternatively, choose Edit ⇒ Emoji & Symbols
- Type “Plus-Minus Sign” in the search field at the top and press Enter
- The symbol should appear. Click on it to insert it into your text
How to type plus-minus sign symbol on Linux
You can type the plus-minus sign on Linux using following steps:
- Place your cursor in the text area where you need to insert the symbol
- Hold ⇧ Shift + Ctrl and press the letter + U
- Press keys 0 0 B 1 consecutively
- And then press ↵ Enter , the desired symbol will be added to your document
How to type plus-minus sign symbol on IOS and Android
The easiest way to type the plus-minus sign on ios and android is to copy and paste it wherever you need it.
How to use plus-minus sign in CSS
span {
content: "\00B1";
}
How to type plus-minus sign in HTML
<span>±</span>
Plus-Minus Sign symbol representation in programming languages
plus-minus sign's representation in different programming languages can be found in table below:
| Language | Representation |
| Rust | \u{B1} |
| Ruby | \u{B1} |
| Python | \u00B1 |
| PHP | \u{B1} |
| Perl | "\x{B1}" |
| Java | \u00B1 |
| Modern JavaScript - Since ES6 | \u{B1} |
| JavaScript | \u00B1 |
| Go | \u00B1 |
| C# | \u00B1 |
| C and C++ | \u00B1 |
| Bash and Zsh - inside echo -e | \u00B1 |
| RFC 5137 | \u'00B1' |