Algebra 2 4.1 Notes - 4.1 Matrix Operations Goals p Add and...

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Matrix Operations Goals p Add and subtract matrices, multiply a matrix by a scalar, and solve matrix equations. p Use matrices in real-life situations. 4.1 VOCABULARY Matrix A rectangular arrangement of numbers in rows and columns Dimensions of a matrix The number of rows m of a matrix by the number of columns n of the matrix, written m ± n Entries of a matrix The numbers in a matrix Equal matrices Matrices that have the same dimensions and equal entries in corresponding positions Scalar A real number by which you multiply a matrix Scalar multiplication The process of multiplying each entry in a matrix by a scalar Your Notes a. The following matrices are equal because corresponding entries are equal . ±² ² b. The following matrices are not equal because corresponding entries in the first row are not equal . ³ 1 ´ 3 1 ´ 2 ´ 13 1 ´ 2 µ 1 4 µ 2 1 ´ 0.6 0.25 2 1 ´µ 3 5 µ Example 1 Comparing Matrices Lesson 4.1 Algebra 2 Notetaking Guide 75
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Your Notes Perform the indicated operation, if possible.
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Algebra 2 4.1 Notes - 4.1 Matrix Operations Goals p Add and...

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