求解行列式题|2-k 2 -2| |2 5-k -4| |-2 -4 5-k|
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求解行列式题
|2-k 2 -2| |2 5-k -4| |-2 -4 5-k|
|2-k 2 -2| |2 5-k -4| |-2 -4 5-k|
![求解行列式题|2-k 2 -2| |2 5-k -4| |-2 -4 5-k|](/uploads/image/z/20039900-68-0.jpg?t=%E6%B1%82%E8%A7%A3%E8%A1%8C%E5%88%97%E5%BC%8F%E9%A2%98%EF%BD%9C2-k+2+-2%EF%BD%9C+%EF%BD%9C2+5-k+-4%EF%BD%9C+%EF%BD%9C-2+-4+5-k%EF%BD%9C)
2-k 2 -2
2 5-k -4
-2 -4 5-k
r3+r2
2-k 2 -2
2 5-k -4
0 1-k 1-k
c2-c3
2-k 4 -2
2 9-k -4
0 0 1-k
= (1-k)[(2-k)(9-k)-8]
= (1-k)(k^2-11k+10)
= (10-k)(1-k)^2.
2 5-k -4
-2 -4 5-k
r3+r2
2-k 2 -2
2 5-k -4
0 1-k 1-k
c2-c3
2-k 4 -2
2 9-k -4
0 0 1-k
= (1-k)[(2-k)(9-k)-8]
= (1-k)(k^2-11k+10)
= (10-k)(1-k)^2.
求解k²-k>2^k
(k*k*k-2k+4)/4k
1^k+2^k+3^k+4^k+5^k.+n^k数列和公式的推导
[k*(2-4k)/(1+2k)]+2k+1
((k²)²-4k²+2k+5)/k²+1分解因式
求证:lim1^k+2^k+3^k+4^k+.n^k/n^(k+1)=1/k+1
化简:k-1/k²-4k+4÷1-k/k²-4的结果是( ) A、2-k/k+2 B、k+2/k-2
当k等于?时,3k(2k-5)+2k(1-3k)=52
代数式K/K-5-2与K+1/K的值互为相反数,则K=?
K+2/5K+K-2/2值等于1
4^2k-4^k=2,k=?
k^4+2k^2-6k-3=0