Pre-Engineering 220 Introduction to MatLab ® & Scientific Programming j kiefer
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4.
Inverse Matrix
a.
Unit matrix
The
unit matrix
is a square matrix with the diagonal elements equal to one and the off-diagonal elements all equal to zero. Here’s a 3x3 unit matrix:
b. Inverse
The
inverse
of a matrix
,
, (denoted
)
is a matrix such that
. The inverse of a particular
matrix may not exist
, in which
case the matrix is said to be
singular
.
The solution of a system of simultaneous equations in effect is a problem of evaluating the inverse of a square matrix.
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physics -> Photometer and Optical Link Sensitivity issues, needs editing 1/2010 Purpose
physics -> Photometer and Optical Link Purpose
physics -> -
physics -> Teacher Notes – Activity 14: Momentum in Collisions
physics -> Teacher Notes – Activity 15: Impulse and Change in Momentum
physics -> Linear Momentum Definition
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, (denoted 
) 
. The inverse of a particular