What does a # / Hashtag / pound sign actually mean in Social Media? The pound sign or hashtag is visually represented by the symbol â#â, and by placing the symbol in front of a word (or series of words) on a social network, it will turn that word into a metadata tag.
Note: You can't go through algebra without seeing quadratic functions. The graphs of quadratic functions are parabolas; they tend to look like a smile or a frown. In this tutorial, get introduced to quadratic functions, look at their graphs, and see some examples of quadratic functions!ou can't go through algebra without seeing quadratic functions. The graphs of quadratic functions are parabolas; they tend to look like a smile or a frown. In this tutorial, get introduced to quadratic functions, look at their graphs, and see some examples of quadratic functions!
Quadratic form. In mathematics, a quadratic form is a homogeneous polynomial of degree two in a number of variables. For example, 4 x 2 + 2 x y â 3 y 2 {\displaystyle 4x^{2}+2xy-3y^{2}} is a quadratic form in the variables x and y. Quadratic forms occupy a central place in various branches of mathematics, including number theory, linear algebra, group theory, differential geometry, differential topology, and Lie theory.