In Exercises 23-28 , let A = [ 1 0 − 2 − 3 1 1 2 0 − 1 ] and B = [ 2 3 0 2 − 1 1 − 1 6 4 ] Use the row-matrix representation of the product to write each row of AB as a linear combination of the rows of B.
In Exercises 23-28 , let A = [ 1 0 − 2 − 3 1 1 2 0 − 1 ] and B = [ 2 3 0 2 − 1 1 − 1 6 4 ] Use the row-matrix representation of the product to write each row of AB as a linear combination of the rows of B.
Solution Summary: The author explains how to write each row of AB as a linear combination of the rows of B.
In Exercises 15–18, find all values of λ for which det(A) = 0.
Assume that the production of 1 unit of magnesium requires 0.8 units of magnesium and 0.2 units of aluminum, and that the production of 1 unit of aluminum requires 0.3 units of magnesium and 0.2 units of aluminum.
In Exercises 19–22, show there is a number c, with 0 ≤ c ≤ 1, such that f(c) = 0. 19. F(x) = x3 +x3− 1
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