Definition:Absolute Value/Definition 2

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Definition

Let $x \in \R$ be a real number.

The absolute value of $x$ is denoted $\size x$, and is defined as:

$\size x = +\sqrt {x^2}$

where $+\sqrt {x^2}$ is the positive square root of $x^2$.


Also see

  • Results about the absolute value function can be found here.


Sources