4.2 - the opposites of the corresponding elements of A ---=...

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1 4.2 Notes Adding and Subtracting Matrices Warm up / Focus b Simplify 4 3 11 121 2 + ÷ ( ) [ ] 2 4 2 5 6 + - Our Goals For Today b Add and subtract matrices b Solve matrix equations Sometimes you may need to add or subtract matrices to get new info. You can perform matrix addition on matrices with equal dimensions by adding corresponding elements … Find the sum - - - + - - - 5 1 4 2 1 3 10 1 5 3 24 12 Identity and Inverse Matrices b The identity matrix for all m X n matrices is the zero matrix , O , whose elements are all zeros. b The opposite, or additive inverse, of an m X n matrix A is – A. s A is the m X n matrix with elements that are
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Unformatted text preview: the opposites of the corresponding elements of A ---= 8 3 4 . 3 2 . 1 4 1 7 6 2 A =-A Solve b A Matrix equation is an equation in which the variable represents a matrix. b Solve -= -+ 4 4 7 10 5 2 1 X Solve for x & y b The corresponding elements of equal matrices are equal --= --+ 10 4 3 5 28 2 5 8 y y x Homework # ____ b P174 (2, 8, 10-22 even)...
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This note was uploaded on 05/13/2011 for the course MTH 98 taught by Professor Johnson during the Fall '09 term at Grand Valley State University.

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