Sep 26, 2011 · So I'm aware that the triangle is uppercase delta which means the difference between: 10\\Delta5=5 But what does Δx mean?

Jan 4, 2010 · It is sometimes used to mean "is defined as" or equals by definition.

Given f(x) = 12xTAx +bTx + α f (x) = 1 2 x T A x + b T x + α where A is an nxn symmetric matrix, b is an n-dimensional vector, and alpha a scalar. Show that xf(x) = Ax + b x f (x) = A x + b and H …

Mar 18, 2011 · Other symbols I have seen used for "is defined to be equal to" are three horizontal lines instead of two, and = = with either a triangle or "def" written directly above it. I have seen …

Jun 12, 2017 · In the third step below, what does the little triangle pointing right mean? Sum of roots:

Sep 3, 2016 · It is called nabla, which is the name of the symbol but not it's meaning. In Calculus, you can find it (alone) as an operator meaning "denotes the vector of partial derivatives":

Jul 9, 2016 · The upside triangle (∇ ∇) is called the Laplacian. Usually one starts using it as you get PDE's that involve not just u(x, t) u (x, t), but deals with function such as u(x, y, t) u (x, y, t) …

I see in some math formulation that a certain angle is called, let's say $$\angle ABC$$ but there is a letter put in front of the angle notation. $$m\angle ABC$$ What does the $m$ represent he...

Nov 19, 2019 · After you ask a question here, if you get an acceptable answer, you should "accept" the answer by clicking the check mark next to it. This scores points for you and for the …

Mar 3, 2019 · Whats the meaning of this symbol? Its a three dot symbol: ∴ I read a book, im could not find any definition of this symbol. This is about continuum property of the natural numbers …