Ch. 4
Quiz yourself by thinking what should be in
each of the black spaces below before clicking
on it to display the answer.
Help!
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| Matrix Addition | If two matrices A and B have the same dimensions, their sum A + B is the matrix in which each element is the sum of the corresponding elements in A and B
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| Matrix Multiplication | If A is an m x n matrix and B is an n x p matrix, then the product A * B is the m x p matrix whose element in row i and column j is the product of row i of A and column j of B
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| Scalar Multiplication | The product of a scalar k and a matrix A is the matrix kA in which each element is k times the corresponding element in A.
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| Transformation | A transformation is a one-to-one correspondence between the points of a preimage and the points of an image.
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| Identity transformation | The transformation that maps each point (x,y) onto itself
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| Matrix Dimensions | In general a matrix with m rows and n columns has dimensions m x n
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| Point Matrix | |x|
|y|
This is a 2 x 1 matrix called a point matrix. The first row is the x coordinate and the y is the second.
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Review the information in the table. When you are ready to quiz yourself you can hide individual columns or the entire table. Then you can click on the empty cells to reveal the answer. Try to recall what will be displayed before clicking the empty cell.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
To hide a column, click on the column name.
To hide the entire table, click on the "Hide All" button.
You may also shuffle the rows of the table by clicking on the "Shuffle" button.
Or sort by any of the columns using the down arrow next to any column heading.
If you know all the data on any row, you can temporarily remove it by tapping the trash can to the right of the row.
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Created by:
Nickp2396
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