Chapter1
Mathematical Foundations of Complex Numbers (CN)
The equation
has no solution in the set of real numbers Ɽ.
Solving it requires the square roots of a negative number, which led to the
invention of complex numbers. In Ȼ, the set of complex numbers, it has two
solutions:
and
, with
.
The notation
was
introduced by Euler, the great Swiss mathematician. In this document, however,
we will use
instead
of
. In electrical engineering,
is
commonly used to denote electric current intensity
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