
Determinan Matriks 3x3 Metode Minor Kofaktor
Presentation
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Mathematics
•
11th Grade
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Practice Problem
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Easy
Elisa El
Used 2+ times
FREE Resource
16 Slides • 14 Questions
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Word Cloud
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Poll
Siap belajar hari ini?
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Hitunglah nilai determinan dari matriks berordo 3x3 dengan metode minor kofaktor berikut!
Jawab:
Untuk mencari nilai determinan matriks A dengan metode minor kofaktor hitung terlebih dahulu nilai minor dan kofaktor.
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a11 = 4
M11 = (2 × 1) - (0 × 2)
M11 = 2 - 0 = 2
C11 = (-1)1+1 × M11
C11 = 1 × 2 = 2
Hitung Minor M11 dan Kofaktor C11 dari a11:
a21 = 8
M21 = (3 × 1) - (6 × 2)
M21 = 3 - 12 = -9
C21 = (-1)2+1 × M21
C21 = -1 × -9 = 9
Hitung Minor M21 dan Kofaktor C21 dari a21:
a31 = 9
M31 = (3 × 0) - (6 × 2)
M31 = 0 - 12 = -12
C31 = (-1)3+1 × M31
C31 = 1 × -12 = -12
Hitung Minor M31 dan Kofaktor C31 dari a31:
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Hitung besar determinan dari matriks tersebut dengan rumus determinan minor kofaktor:
Det (A) = (a11 × C11) + (a21 × C21) + (a31 × C31)
Det (A) = (4 × 2) + (8 × 9) + (9 × (-12))
Det (A) = 8 + 72 - 108
Det (A) = -28
Jadi nilai determinan dari matriks 3x3 tersebut bernilai -28.
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Latihan yuks dengan menggunakan metode Minor-Kofaktor
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Fill in the Blank
Nilai C11 adalah ...
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Fill in the Blank
Nilai C12 adalah ...
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Fill in the Blank
Nilai C13 adalah ...
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Fill in the Blank
maka nilai determinan matriks tersebut adalah ...
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Latihan yuks dengan menggunakan metode Minor-Kofaktor
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Fill in the Blank
Nilai C11 adalah ...
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Fill in the Blank
Nilai C21 adalah ...
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Fill in the Blank
Nilai C31 adalah ...
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Fill in the Blank
maka nilai determinan matriks A adalah ...
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Fill in the Blank
nilai determinannya adalah ...
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Fill in the Blank
nilai determinannya adalah ...
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Fill in the Blank
hitunglah determinan matriks berikut!
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Poll
Bagaimana pemahaman kamu setelah mempelajari Determinan Matriks 3x3 metode minor-kofaktor?
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