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Resmawan-Aljabar-Linear-Elementer-Sistem-Persamaan-Linear

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2. Eliminasi Gauss 2.4 Subtitusi Balik

2.4 Subtitusi Balik

Solution

Dari matriks diperoleh sistem persamaan yang bersesuaian, yaitu

x 1 + 3x 2 − 2x 3 + 2x 5 = 0

x 3 + 2x 4 + 3x 6 = 1

x 6 = 1 3

Dari sistem persamaan linear, dilakukan langkah-langkah subtitusi balik

sebagai berikut:

1. Selesaikan persamaan-persamaan untuk variabel utama

x 1 = −3x 2 + 2x 3 − 2x 5

x 3 = 1 − 2x 4 − 3x 6

x 6 = 1 3

Resmawan (Math UNG) Sistem Persamaan Linear Agustus 2017 54 / 69

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