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Terms in this set (17)
Matrix
a rectangular array of #s enclosed in brackets
dimensions
the size of a matrix rows by columns
entry
a value in a matrix
address
the location of an entry in a matrix
scaler
a # that is multiplied by a matrix
matrix product
the prodct of 2 or more matrices
main diagonal
in a square matrix, the diagonal from the upper left corner to the lower right corner
multiplicative identity matrix
any square matrix, that hs all the entries in the main diagonal equal to 1 and all other entries equal to 0
determinat
in a 2by2 matrix, the diff of the products of the diagonals
inverse matrix
in a square matrix, the produckt of A is the indeitty matrix
coefficient matrix
a matrix that contains the coefficients for the cariables in a system of equaltions
constant matrix
a matrix that contains the constats is asystme of equaltions
matrix equation
AX=B where A is the coefficient matrix, X is the variable matrix, and B is the constant matrix
augmentde matrix
the coeffcients and constant term in a system of equations
row operation
and operation formed on a row of an augmented matrix that creates and equivalent matrix
ro reduction
the process of performing elementary row operations on an augmented matrix to solve a system
reduced rowechelon form
a form of an augmented matrix in whcih the coeffients columns form an indentity matrix
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