# Question 9.3: Use Gauss elimination to solve 3x1 − 0.1x2 − 0.2x3 = 7.85 (E...

Use Gauss elimination to solve

$3x_1 − 0.1x_2 − 0.2x_3 = 7.85$          (E9.3.1)

$0.1x_1 + 7x_2 − 0.3x_3 = −19.3$               (E9.3.2)

$0.3x_1 − 0.2x_2 + 10x_3 = 71.4$                    (E9.3.3)

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Question: 9.CS.5

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Question: 9.5

## Solve the following tridiagonal system:[2.04 −1 −1 2.04 −1 −1 2.04 −1 −1 2.04][x_1 x_2 x_3 x_4] = [40.8 0.8 0.8 200.8] ...

As with Gauss elimination, the first step involves...
Question: 9.4

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Multiplying the first equation by 1∕(0.0003) yield...
Question: 9.1

## Compute values for the determinants of the systems represented in Figs. 9.1 and 9.2. ...

For Fig. 9.1: D =\left|\begin{matrix}3 &...