Go To Index
Mathematical Symbols
| Symbol | Name in Maths | Symbols Meaning | Example |
|---|---|---|---|
| ≠ | not equal sign | inequality | 10 ≠ 6 |
| = | equals sign | equality | 3 = 1 + 2 |
| < | strict inequality | less than | 7 < 10 |
| > | strict inequality | greater than | 6 > 2 |
| ≤ | inequality | less than or equal to | x ≤ , means, x = y or x < y, but not vice-versa. |
| ≥ | inequality | greater than or equal to | a ≥ b, means, a = b or a > b, but vice-versa, does not hold true. |
| [ ] | square brackets | calculate expression inside first | [2 x 5] + 7 = 17 |
| ( ) | parentheses | calculate expression inside first | 3 x (3 + 7) = 30 |
| - | minus sign | subtraction | 5 - 2 = 3 |
| + | plus sign | addition | 4 + 5 = 9 |
| ∓ | minus-plus | both minus and plus operations | 1 ∓ 4 = -3 and 5 |
| + or ± | plus - minus | both plus and minus operations | 5 ± 3 = 8 and 2 |
| x | times sign | multiplication | 4 x 3 = 12 |
| * | asterisk | multiplication | 2 * 3 = 6 |
| ÷ | division sign / obelus | 15 ÷ 5 = 3 | Such that |
| • | multiplication dot | multiplication | 2 • 3 = 6 |
| − | horizontal line | division / fraction | 8/ 4 = 2 |
| / | division slash | division | 6/2 = 3 |
| ^ | caret/circumflex | and | x ^ y |
| ∙ | And | and | x ∙ y |
| + | Plus | or | x + y |
| & | Ampersand | and | x & y |
| | | vertical line | or | x | y |
| ∨ | reversed caret | or | x ∨ y |
| x | Bar | unknow variable | → = 2 (suppose) |
| x' | single-quote | not - negation | x' |
| ! | Exclamation mark | not - negation | ! x |
| ∼ | Tilde | negation | ∼ x |
| < > | Equivalent | if and only if (iff) | Such that |
| ⇒ | Implies | often step | x = 2 ⇒ 2 = 0 (example) |
| ∀ | for all | for all - for group of numbers | {x | x ∈ R, ∀ < >} |
| ↔ | Equivalent | if only if (iff) | n/a |
| ∃ | there exists | n/a | n/a |
| ∵ | because / since | replace for wording | ∵ x = 2 |
| ∴ | Therefore | replace for wording | ∴ x = 10 |
| Ε | Epsilon | represents a very small number, near-zero | Ε → 0 |
| limx → a | limit | limit value of a function | limx → a (3x + 1) = 3xa+1 = 3a+ I |
| ∠ | angle | formed by two rays | ∠ABC = 30° |
| ∡ | measured angle | show the angle value | ∠ABC = 30° |
| ∢ | spherical angle | show the angle value | AOB= 30° |
| ∟ | right angle | = 90° | α = 90° |
| ° | degree | 2πr=360° | α = 60° |
| Z | integer no. set | Z= {...-3, -2, -1, 0, 1, 2, 3,...} | -6 ∈ Z |
| Q | rational no. set | {x | x ∈ Q^ x = a /b, a, b; ∈ Q} | x ∈ Q |
| R | real no. set | {x | x ∈ R^ -∞ < x < ∞} | 6.34 ∈ R |
No comments:
Post a Comment