8/19/2019 tugas kum(--)

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Soal 7. 0 1 1 x -2

y + z= -2 0 4 6 y -12

4y + 6z = -12 1 1 1 z 2

x + y + z = 2

-1 0 0 x -4

-6 -2 0 y -24

1 1 1 z 2

-1 0 0 x -4

3 1 0 y 12

-2 0 1 z -10

1 0 0 x 4

0 1 0 y 0

0 0 1 z -2

pembuktian =

1 x (0)+ 1 x (-2)= -2

4 x (-2) + 6 x (-2) = -12

1 x (4) + 1 x (0) + 1 x (-2) 2

Soal 8. 2 1 -3 x 8.000

2x + y - 3z = 8 5 0 2 y 3.000

5x + 2z = 3 8 -1 7 z 0.000

8x - y + 7z = 0

1.000 0.500 -1.500 x 4.000

0.000 -2.500 9.500 y -17.000

0.000 -5.000 19.000 z -32.000

1 0 0 x 1

0 1 -4y

7

0 0 0 z 2

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