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(Solution) - Repeat Exercise 7 using C 1 D 1 2 In Exercise 7 a 3x1

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Repeat Exercise 7 using C?1 = D?1/2.
In Exercise 7
a. 3x1 ? x2 + x3 = 1,
?x1 + 6x2 + 2x3 = 0,
x1 + 2x2 + 7x3 = 4.
b. 10x1 ? x2 = 9,
?x1 + 10x2 ? 2x3 = 7,
? 2x2 + 10x3 = 6.
c. 10x1 + 5x2 = 6,
5x1 + 10x2 ? 4x3 = 25,
? 4x2 + 8x3 ? x4 = ?11,
? x3 + 5x4 = ?11.
d. 4x1 + x2 ? x3 + x4 = ?2,
x1 + 4x2 ? x3 ? x4 = ?1,
?x1 ? x2 + 5x3 + x4 = 0,
x1 ? x2 + x3 + 3x4 = 1.
e. 4x1 + x2 + x3 + x5 = 6,
x1 + 3x2 + x3 + x4 = 6,
x1 + x2 + 5x3 ? x4 ? x5 = 6,
x2 ? x3 + 4x4 = 6,
x1 ? x3+ +4x5 = 6.
f. 4x1 ? x2 ? x4 = 0,
?x1 + 4x2 ? x3 ? x5 = 5,
? x2 + 4x3 ? x6 = 0,
?x1 + 4x4 ? x5 = 6,
? x2 ? x4 + 4x5 ? x6 = ?2,
? x3 ? x5 + 4x6 = 6.

 







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