ALEKS 360 ONLINE ACCESS (18 WEEKS) FOR
ALEKS 360 ONLINE ACCESS (18 WEEKS) FOR
2nd Edition
ISBN: 9781266885068
Author: Miller
Publisher: McGraw Hil
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Chapter A1, Problem 17PE

Evaluate the determinant of matrix B, using expansion by minors. (See Exercises 3-4.)

B= 0 1 2 3 1 2 3 2 2

a. About the first column

b. About the second row

Example 3

Evaluating a 3 × 3 Determinant.

Evaluate the determinant 2 4 2 1 3 0 5 5 1

Example 4

Evaluating a 3 × 3 Determinant

Evaluate the determinant by expanding minors about the elements in the second row.

2 4 2 1 3 0 5 5 1

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Question 1. Solve the system - x1 x2 + 3x3 + 2x4 -x1 + x22x3 + x4 2x12x2+7x3+7x4 Question 2. Consider the system = 1 =-2 = 1 3x1 - x2 + ax3 = 1 x1 + 3x2 + 2x3 x12x2+2x3 = -b = 4 1 For what values of a, b will the system be inconsistent? 2 For what values of a, b will the system have only one solution? For what values of a, b will the saystem have infinitely many solutions?

Chapter A1 Solutions

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