scag5e_ppt_8_4 - 2 4 3 2 1 and 1 3 4 1 3 1 A B = =...

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Section 8.4 Matrix Algebra
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OBJECTIVE 1
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1 2 2 3 0 4 and 0 1 3 2 1 4 A B - - = = - -
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The Zero Matrix
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OBJECTIVE 2
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1 2 2 0 2 3 3 1 0 1 3 1 2 1 0 4 A B C - - = = = - -
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OBJECTIVE 3
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[ ] 2 Find if 1 2 4 and 1 3 RC R C = - = -
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A clothing store sells ladies blouses for $40, scarves for $20, and wool suits for $300. Last month, the store had sales consisting of 200 blouses, 100 scarves, and 10 suits. What was the total revenue due to these sales?
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Find the product if 2 4 3 2 1 1 3 0 4 1 3 1 AB A B - = = - - -
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Find the product if 2 4 3 2 1 1 3 0 4 1 3 1 BA A B - = = - - - Recall from last example: 5 7 1 11 AB = -
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1 3 2 0 and 2 7 3 4 A B - = = - -
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Unformatted text preview: 2 4 3 2 1 and 1 3 4 1 3 1 A B - = = - - - OBJECTIVE 4 1 1 1 3 1 2 Show that the inverse of is 4 2 3 2 2 A A- -- -- = 1 1 2 The matrix 1 3 is nonsingular. Find its inverse. 2 2 1 A- =- 2 1 Show that the matrix has no inverse. 4 2 A- = - OBJECTIVE 5 2 1 Solve the system of equations: 3 2 2 2 1 x y z y z x y z-+ = -+ = - + + = -...
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scag5e_ppt_8_4 - 2 4 3 2 1 and 1 3 4 1 3 1 A B = =...

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