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Concept
Identity Matrix
An
identity matrix
is a
square matrix
with
ones on the main diagonal
and
zeros elsewhere
, serving as the
multiplicative identity
in
matrix algebra
. This means that when
any matrix
is multiplied by an
identity matrix
of compatible dimensions, the
original matrix
is unchanged, analogous to
multiplying a number by one
in arithmetic.
Relevant Degrees
Algebra 100%
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