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1 The row-echelon reduced form of the matrix -22 3 1 3 2 0 2 0 0 -1 -1 0 1 -3 -2 2 is given by 10 0 10 2 R 0 10 0 1/2 -1/2 0
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Answer #1

a) the nullity of AT is the number of rows in reduced row echelon form without leading entry 1.

here reduced row echelon form is R . it has leading entry in every row . so

Nullity (AT) = 0

b) A m*n matrix represents transformation \large T:\;R^n\rightarrow R^m

here A is 3*6 . so this represents transformation \large T:\;R^6\rightarrow R^3

so d=6

c) number of free variables are number of columns without zero is reduced form of A.

here R has 3 columns with out leading entry 1. so

number of free variable= 3

d) we have 3 leading entry in reduced row echelon form of A . so

the number of pivot of A is 3

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