Unit 1 Matrices

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Unit 1Matrices
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Matrix (matrices)
Column 4
Column 1
Column 2
Column 3
Row 1
Row 2
Row 3
Row m
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Ex. Find the dimensions.
A matrix of m rows and n columns is called a
matrix with dimensions m x n.
3 X 3
2 X 3
2 X 1
1 X 2
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Find the dimensions.
3 X 2
2 X 2
3 X 3
1 X 2
2 X 1
1 X 1
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13.2Addition and Subtraction of Matrices

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To add matrices, they must have the same
dimensions. Just add the corresponding elements.
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A B
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12.)
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To subtract matrices, we subtract the
corresponding elements. The matrices must have
the same dimensions!
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4.) Subtract.
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15.)
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Cannot be added
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Scalar Multiplication

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Scalar Multiplication
We multiply each term inside our matrix by k.
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17.)
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Solve for w x and y