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To do calculations using complex numbers.
using contraction and expansion
Ah! but they can. Using absolute values |3-i|<|3+2i|.
A complex number has an imaginary component and is of the form a + bi. (And i is the square root of -1 in this application.)A matrix is a table of numbers. For example, we might give the current (x,y,z) coordinates of a dozen asteroids using a 12 * 3 matrix.A complex matrix is a matrix of complex numbers.
In (a+bi) + (c+di), you add the real parts using the laws for real numbers and do the same for the imanginary parts. (a+c)+(b+d)i