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The multiplication sign (×), also known as the times sign or the dimension sign, is a mathematical symbol used to denote the operation of multiplication, which results in a product. While similar to a lowercase X ( x ), the form is properly a four-fold rotationally symmetric saltire .
Multiplication (often denoted by the cross symbol ×, by the mid-line dot operator ⋅, by juxtaposition, or, on computers, by an asterisk *) is one of the four elementary mathematical operations of arithmetic, with the other ones being addition, subtraction, and division. The result of a multiplication operation is called a product.
× (multiplication sign) 1. In elementary arithmetic, denotes multiplication, and is read as times; for example, 3 × 2. 2. In geometry and linear algebra, denotes the cross product. 3. In set theory and category theory, denotes the Cartesian product and the direct product. See also × in § Set theory. · 1.
For example, 21 is the product of 3 and 7 (the result of multiplication), and (+) is the product of and (+) (indicating that the two factors should be multiplied together). When one factor is an integer , the product is called a multiple .
Through The ‘Golden Arches’. Walk into your local McDonald’s, and head to the counter to order a meal. Well, you can, but it seems preferred that you place your order at a kiosk, pay by a ...
Multiplication is represented using the multiplication sign (×), the asterisk (*), parentheses (), or a dot (⋅). Therefore, the statement "five times three equals fifteen" can be written as " 5 × 3 = 15 {\displaystyle 5\times 3=15} ", " 5 ∗ 3 = 15 {\displaystyle 5\ast 3=15} ", " ( 5 ) ( 3 ) = 15 {\displaystyle (5)(3)=15} ", or " 5 ⋅ 3 ...
For example, multiplication is granted a higher precedence than addition, and it has been this way since the introduction of modern algebraic notation. [2] [3] Thus, in the expression 1 + 2 × 3, the multiplication is performed before addition, and the expression has the value 1 + (2 × 3) = 7, and not (1 + 2) × 3 = 9.
Multiplication table from 1 to 10 drawn to scale with the upper-right half labeled with prime factorisations. In mathematics, a multiplication table (sometimes, less formally, a times table) is a mathematical table used to define a multiplication operation for an algebraic system.
Here, the plus-or-minus sign indicates that the term may be added or subtracted depending on whether n is odd or even; a rule which can be deduced from the first few terms. A more rigorous presentation would multiply each term by a factor of (−1) n , which gives +1 when n is even, and −1 when n is odd.
In 1631 Oughtred introduced the multiplication sign (×) his proportionality sign, and abbreviations sin and cos for the sine and cosine functions. Albert Girard also used the abbreviations 'sin', 'cos' and 'tan' for the trigonometric functions in his treatise.
