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Question : 6 of 160
Marks:
+1,
-0
Solution:
[][]=[] Let
A‌=[],X=[].B‌=[]|A|‌=1(24−18)−2(−12−9)−3(12+12)
‌=6+42−72‌=−24 Adj‌A‌=[]T‌=[]A−1‌=‌‌adj‌A‌=‌[] X=‌A−1B‌=‌[][]‌=‌[| 6−6−24 |
| 21+3−36 |
| 24−32 |
] ‌=‌[| 6−6−24 |
| 21+3−36 |
| 24−32 |
]‌=‌[]=[] ∴α=1,β=2,γ=3‌ Now, ‌α2+γ2=1+9=10=5β
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