Linear Algebra Examples

[\begin{array}{c} 2.04 a & - 1 b & 0 d & 0 g \\ - 1 a & 2.04 b & - 1 d & 0 g \\ 0 a & - 1 b & 2.04 d & - 1 g \\ 0 a & 0 b & - 1 d & 2.04 g \end{array}] - [\begin{array}{c} 40.8 \\ 0.8 \\ 0.8 \\ 200.8 \end{array}]

$[\begin{array}{c} 2.04 a & - 1 b & 0 d & 0 g \\ - 1 a & 2.04 b & - 1 d & 0 g \\ 0 a & - 1 b & 2.04 d & - 1 g \\ 0 a & 0 b & - 1 d & 2.04 g \end{array}] - [\begin{array}{c} 40.8 \\ 0.8 \\ 0.8 \\ 200.8 \end{array}]$

Step 1

Rewrite

- 1 b

$- 1 b$ as

- b

$- b$ .

[\begin{array}{c} 2.04 a & - b & 0 d & 0 g \\ - 1 a & 2.04 b & - 1 d & 0 g \\ 0 a & - 1 b & 2.04 d & - 1 g \\ 0 a & 0 b & - 1 d & 2.04 g \end{array}] - [\begin{array}{c} 40.8 \\ 0.8 \\ 0.8 \\ 200.8 \end{array}]

$[\begin{array}{c} 2.04 a & - b & 0 d & 0 g \\ - 1 a & 2.04 b & - 1 d & 0 g \\ 0 a & - 1 b & 2.04 d & - 1 g \\ 0 a & 0 b & - 1 d & 2.04 g \end{array}] - [\begin{array}{c} 40.8 \\ 0.8 \\ 0.8 \\ 200.8 \end{array}]$

Step 2

Multiply

0

$0$ by

d

$d$ .

[\begin{array}{c} 2.04 a & - b & 0 & 0 g \\ - 1 a & 2.04 b & - 1 d & 0 g \\ 0 a & - 1 b & 2.04 d & - 1 g \\ 0 a & 0 b & - 1 d & 2.04 g \end{array}] - [\begin{array}{c} 40.8 \\ 0.8 \\ 0.8 \\ 200.8 \end{array}]

$[\begin{array}{c} 2.04 a & - b & 0 & 0 g \\ - 1 a & 2.04 b & - 1 d & 0 g \\ 0 a & - 1 b & 2.04 d & - 1 g \\ 0 a & 0 b & - 1 d & 2.04 g \end{array}] - [\begin{array}{c} 40.8 \\ 0.8 \\ 0.8 \\ 200.8 \end{array}]$

Step 3

Multiply

0

$0$ by

g

$g$ .

[\begin{array}{c} 2.04 a & - b & 0 & 0 \\ - 1 a & 2.04 b & - 1 d & 0 g \\ 0 a & - 1 b & 2.04 d & - 1 g \\ 0 a & 0 b & - 1 d & 2.04 g \end{array}] - [\begin{array}{c} 40.8 \\ 0.8 \\ 0.8 \\ 200.8 \end{array}]

$[\begin{array}{c} 2.04 a & - b & 0 & 0 \\ - 1 a & 2.04 b & - 1 d & 0 g \\ 0 a & - 1 b & 2.04 d & - 1 g \\ 0 a & 0 b & - 1 d & 2.04 g \end{array}] - [\begin{array}{c} 40.8 \\ 0.8 \\ 0.8 \\ 200.8 \end{array}]$

Step 4

Rewrite

- 1 a

$- 1 a$ as

- a

$- a$ .

[\begin{array}{c} 2.04 a & - b & 0 & 0 \\ - a & 2.04 b & - 1 d & 0 g \\ 0 a & - 1 b & 2.04 d & - 1 g \\ 0 a & 0 b & - 1 d & 2.04 g \end{array}] - [\begin{array}{c} 40.8 \\ 0.8 \\ 0.8 \\ 200.8 \end{array}]

$[\begin{array}{c} 2.04 a & - b & 0 & 0 \\ - a & 2.04 b & - 1 d & 0 g \\ 0 a & - 1 b & 2.04 d & - 1 g \\ 0 a & 0 b & - 1 d & 2.04 g \end{array}] - [\begin{array}{c} 40.8 \\ 0.8 \\ 0.8 \\ 200.8 \end{array}]$

Step 5

Rewrite

- 1 d

$- 1 d$ as

- d

$- d$ .

[\begin{array}{c} 2.04 a & - b & 0 & 0 \\ - a & 2.04 b & - d & 0 g \\ 0 a & - 1 b & 2.04 d & - 1 g \\ 0 a & 0 b & - 1 d & 2.04 g \end{array}] - [\begin{array}{c} 40.8 \\ 0.8 \\ 0.8 \\ 200.8 \end{array}]

$[\begin{array}{c} 2.04 a & - b & 0 & 0 \\ - a & 2.04 b & - d & 0 g \\ 0 a & - 1 b & 2.04 d & - 1 g \\ 0 a & 0 b & - 1 d & 2.04 g \end{array}] - [\begin{array}{c} 40.8 \\ 0.8 \\ 0.8 \\ 200.8 \end{array}]$

Step 6

Multiply

0

$0$ by

g

$g$ .

[\begin{array}{c} 2.04 a & - b & 0 & 0 \\ - a & 2.04 b & - d & 0 \\ 0 a & - 1 b & 2.04 d & - 1 g \\ 0 a & 0 b & - 1 d & 2.04 g \end{array}] - [\begin{array}{c} 40.8 \\ 0.8 \\ 0.8 \\ 200.8 \end{array}]

$[\begin{array}{c} 2.04 a & - b & 0 & 0 \\ - a & 2.04 b & - d & 0 \\ 0 a & - 1 b & 2.04 d & - 1 g \\ 0 a & 0 b & - 1 d & 2.04 g \end{array}] - [\begin{array}{c} 40.8 \\ 0.8 \\ 0.8 \\ 200.8 \end{array}]$

Step 7

Multiply

0

$0$ by

a

$a$ .

[\begin{array}{c} 2.04 a & - b & 0 & 0 \\ - a & 2.04 b & - d & 0 \\ 0 & - 1 b & 2.04 d & - 1 g \\ 0 a & 0 b & - 1 d & 2.04 g \end{array}] - [\begin{array}{c} 40.8 \\ 0.8 \\ 0.8 \\ 200.8 \end{array}]

$[\begin{array}{c} 2.04 a & - b & 0 & 0 \\ - a & 2.04 b & - d & 0 \\ 0 & - 1 b & 2.04 d & - 1 g \\ 0 a & 0 b & - 1 d & 2.04 g \end{array}] - [\begin{array}{c} 40.8 \\ 0.8 \\ 0.8 \\ 200.8 \end{array}]$

Step 8

Rewrite

- 1 b

$- 1 b$ as

- b

$- b$ .

[\begin{array}{c} 2.04 a & - b & 0 & 0 \\ - a & 2.04 b & - d & 0 \\ 0 & - b & 2.04 d & - 1 g \\ 0 a & 0 b & - 1 d & 2.04 g \end{array}] - [\begin{array}{c} 40.8 \\ 0.8 \\ 0.8 \\ 200.8 \end{array}]

$[\begin{array}{c} 2.04 a & - b & 0 & 0 \\ - a & 2.04 b & - d & 0 \\ 0 & - b & 2.04 d & - 1 g \\ 0 a & 0 b & - 1 d & 2.04 g \end{array}] - [\begin{array}{c} 40.8 \\ 0.8 \\ 0.8 \\ 200.8 \end{array}]$

Step 9

Rewrite

- 1 g

$- 1 g$ as

- g

$- g$ .

[\begin{array}{c} 2.04 a & - b & 0 & 0 \\ - a & 2.04 b & - d & 0 \\ 0 & - b & 2.04 d & - g \\ 0 a & 0 b & - 1 d & 2.04 g \end{array}] - [\begin{array}{c} 40.8 \\ 0.8 \\ 0.8 \\ 200.8 \end{array}]

$[\begin{array}{c} 2.04 a & - b & 0 & 0 \\ - a & 2.04 b & - d & 0 \\ 0 & - b & 2.04 d & - g \\ 0 a & 0 b & - 1 d & 2.04 g \end{array}] - [\begin{array}{c} 40.8 \\ 0.8 \\ 0.8 \\ 200.8 \end{array}]$

Step 10

Multiply

0

$0$ by

a

$a$ .

[\begin{array}{c} 2.04 a & - b & 0 & 0 \\ - a & 2.04 b & - d & 0 \\ 0 & - b & 2.04 d & - g \\ 0 & 0 b & - 1 d & 2.04 g \end{array}] - [\begin{array}{c} 40.8 \\ 0.8 \\ 0.8 \\ 200.8 \end{array}]

$[\begin{array}{c} 2.04 a & - b & 0 & 0 \\ - a & 2.04 b & - d & 0 \\ 0 & - b & 2.04 d & - g \\ 0 & 0 b & - 1 d & 2.04 g \end{array}] - [\begin{array}{c} 40.8 \\ 0.8 \\ 0.8 \\ 200.8 \end{array}]$

Step 11

Multiply

0

$0$ by

b

$b$ .

[\begin{array}{c} 2.04 a & - b & 0 & 0 \\ - a & 2.04 b & - d & 0 \\ 0 & - b & 2.04 d & - g \\ 0 & 0 & - 1 d & 2.04 g \end{array}] - [\begin{array}{c} 40.8 \\ 0.8 \\ 0.8 \\ 200.8 \end{array}]

$[\begin{array}{c} 2.04 a & - b & 0 & 0 \\ - a & 2.04 b & - d & 0 \\ 0 & - b & 2.04 d & - g \\ 0 & 0 & - 1 d & 2.04 g \end{array}] - [\begin{array}{c} 40.8 \\ 0.8 \\ 0.8 \\ 200.8 \end{array}]$

Step 12

Rewrite

- 1 d

$- 1 d$ as

- d

$- d$ .

[\begin{array}{c} 2.04 a & - b & 0 & 0 \\ - a & 2.04 b & - d & 0 \\ 0 & - b & 2.04 d & - g \\ 0 & 0 & - d & 2.04 g \end{array}] - [\begin{array}{c} 40.8 \\ 0.8 \\ 0.8 \\ 200.8 \end{array}]

$[\begin{array}{c} 2.04 a & - b & 0 & 0 \\ - a & 2.04 b & - d & 0 \\ 0 & - b & 2.04 d & - g \\ 0 & 0 & - d & 2.04 g \end{array}] - [\begin{array}{c} 40.8 \\ 0.8 \\ 0.8 \\ 200.8 \end{array}]$