The algebraic representation of vectors is obtained by putting their "tail" at the origin of a multidimensional space and obtaining the appropriate coordinates, or components, of their "point."
The square then gives the absolute value (magnitude) of a vector like for the vector in the one dimensional, the magnitude of vector is .
If is the vector, its absolute value in the two-dimensional plane is where x and y represent the x-component and y-component of A.
In three dimensional plane, the absolute value is where x, y, and z represent the x-component, y-component, and z -component of A.