x1 + 3x2-x3 = 1 2x2 - 4x3 x4 - = 0 -2x1 - - 6x2+2x3+3x4 = -2 3x17x23x3 +8x4 = 0 1 3 -1 0 2 -4 от -1 A = -2 -6 2 3 3 7 -3 8

Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter1: Fundamental Concepts Of Algebra
Section1.4: Fractional Expressions
Problem 72E
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Question

a) Evaluate the determinant of matrix A where: A = SEE IMAGE

(b) Solve the following system of equations for x3 only, by using Cramer’s (answer in part a might be helpful)

SEE IMAGE FOF SYSTEM OF EQN

 

x1 + 3x2-x3
= 1
2x2
-
4x3 x4
-
= 0
-2x1
- -
6x2+2x3+3x4
= -2
3x17x23x3 +8x4 = 0
Transcribed Image Text:x1 + 3x2-x3 = 1 2x2 - 4x3 x4 - = 0 -2x1 - - 6x2+2x3+3x4 = -2 3x17x23x3 +8x4 = 0
1
3 -1
0
2
-4
от
-1
A =
-2
-6
2
3
3
7
-3
8
Transcribed Image Text:1 3 -1 0 2 -4 от -1 A = -2 -6 2 3 3 7 -3 8
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