Engineering↗
Absolute Value: Definition and Properties
Absolute value as distance from zero, the two-case definition, the identity |a| = r{a2}, and the triangle inequality.
Every page in the KEVOS library tagged absolute value. 2 pages.
Absolute value as distance from zero, the two-case definition, the identity |a| = r{a2}, and the triangle inequality.
Why x1/2 must mean sqrt(x), how n-th roots and fractional powers are the same thing, when a root is not a real number, and why (x6)1/2 is abs{x3} rather than x3.