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# Let A be a 4 4 matrix. If adj A = 2 0 0 0 0 2 1 0 0 4 3 2 0 2 1 2 (a) calculate the

ISBN: 9780136009290 436

## Solution for problem 9 Chapter 2.3

Linear Algebra with Applications | 8th Edition

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Problem 9

Let A be a 4 4 matrix. If adj A = 2 0 0 0 0 2 1 0 0 4 3 2 0 2 1 2 (a) calculate the value of det(adj A). What should the value of det(A) be? [Hint: Use the result from Exercise 8.] (b) find A. 1

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L21 - 10 Now You Try It (NYTI): 1. A large sphere of material is placed in a dissolving liquid. (a) When the radius is 1 meter, it is observed to be changing atm/or. At that instant, what is the rate at which the sphere’s volume is being dissolved with respect to time (b) Suppose instead that the liquid is known to dissolve the material...

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