218 - Intro to Matrices and Vectors
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Last updated 3:35 PM on 7/1/24
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9 Terms
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Real Numbers (R)
All real numbers, also known as scalars.
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Membership Symbol (∈)
Indicates membership.
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Vector in R^n
A list of n scalars organized vertically into a list (lower-case bold letters).
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Matrix
An m x n matrix is an array of scalars with m rows and n columns.
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Square Matrix
An n x n matrix is a square.
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(i,j) Entry of a Matrix
The scalar in the ith row and jth column of a matrix.
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Transposition Property
(A^T)T = A.
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Symmetric Matrix
S^T = S.
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Trace of a Matrix
The sum of its diagonal elements.
