Matrices
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Last updated 4:53 PM on 12/29/25
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10 Terms
1
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Commutativity
Multiplying matrices is not commutative
2
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Identity matrix
[ 1 0
0 1 ]
3
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Enlargement k about the origin
[ k 0
0 k ]
4
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Reflection in x axis
[ 1 0
0 -1 ]
5
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Reflection in y axis
[ -1 0
0 1 ]
6
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Reflection in line y=x
[ 0 1
1 0 ]
7
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Reflection in line y=-x
[ 0 -1
-1 0 ]
8
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Rotation 90° clockwise about the origin
[ 0 1
-1 0 ]
9
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Rotation 90° anticlockwise about the origin
[ 0 -1
1 0 ]
10
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Rotation 180° clockwise about the origin
[ -1 0
0 -1 ]
Note 
Flashcards (44)