Hard Maths 1

2010-11-02 6:10 pm
Only key steps are required:


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回答 (1)

2010-11-02 7:46 pm
✔ 最佳答案
1. C2*1+C3*1+C4*1+C5*1+C1 -> C1
2. Factor (a+4b)
3. C1*(-b)+C2->C2, C1*(-b)+C3->C3, C1*(-b)+C4->C4, C1*(-b)+C5->C5
4. det(A)=(a+4b)(a-b)^4
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