cari lah nilai x jika nilai det A= 0 | x-4 0 0 | | 0 x 0 | <== Matrix | 0 3 x-1 | si jenius mana nih?
Matematika
asry96
Pertanyaan
cari lah nilai x jika nilai det A= 0
| x-4 0 0 |
| 0 x 0 | <== Matrix
| 0 3 x-1 |
" si jenius mana nih"?
| x-4 0 0 |
| 0 x 0 | <== Matrix
| 0 3 x-1 |
" si jenius mana nih"?
1 Jawaban
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1. Jawaban whongaliem
x - 4 0 0 x - 4 0
0 x 0 0 x
0 3 x - 1 0 x - 1
det A = {(x - 4)(x)(x - 1)+( 0 .0 .0)+(0 .0 (x - 1)} - {(0 .0 .(x - 1) + (x-3) .0.3) + (0. x. 0)}
0 = { x (x - 4)(x - 1) + 0 + 0 } - (0 + 0 + 0)
0 = x (x - 4) (x - 1)
x = 0 atau x - 4 = 0 atau x - 1 = 0
x = 0 atau x = 4 atau x = 1