2 1 4 1
3 -1 2 1
1 3 0 1
4 0 7 2
r1+r2,r3+3r2得:
5 0 6 2
3 -1 2 1
10 0 6 4
4 0 7 2
按第二列展開得:
5 6 2
- 10 6 4
4 7 2
r2-2r1,r3-r1得:
5 6 2
- 0 -6 0
-1 1 0
按第三列展開得:
0 -6
-2
-1 1
=-2×(6-0)
=-12
2 1 4 1 3 -1 2 1 1 3 0 1 4 0 7 2 這個(gè)四階行列式怎么解
2 1 4 1 3 -1 2 1 1 3 0 1 4 0 7 2 這個(gè)四階行列式怎么解
數(shù)學(xué)人氣:426 ℃時(shí)間:2020-07-21 12:15:47
優(yōu)質(zhì)解答
我來回答
類似推薦
- 求D=2 1 -5 1 1 -3 0 -6 0 2 -1 2 1 4 -7 6這個(gè)四階行列式的解!
- 急、、五階行列式求解,5 -2 0 0 0 4 -1 0 0 0 0 0 2 6 5 0 0 1 3 5 0 0 -2 7 9
- 已知四階行列式D中第三列元素依次為-1,2,0,1,它們的余子式依次分別為5,3,-7,4,則D=_.
- 2 1 -5 1 1 -3 0 -6 0 2 -1 2 1 4 -7 6 如上行列式應(yīng)該怎么解?我按照公式展開,答案總是不對(duì).
- * * * * * 1 * * * * 2 0 * * * 3 0 0 * * 4 0 0 0 * 5 0 0 0 0 6 0 0 0 0 0 求6階行列式,等于-6!怎么解
- 函數(shù)f(x)=sinx-cosx^2的最小值是?
- 英語翻譯
- I took my grandpa to the hospital this morning,_____ I missed the first class.
- So crazy
- 方差是各個(gè)數(shù)據(jù)與平均數(shù)之差的平方的平均數(shù)
- 函數(shù)y=f(x)與它反函數(shù)y=f^-1(x)怎么讀?
- These are photos of my families.Look at them 改錯(cuò)
猜你喜歡
- 1平面與平面重合,是否屬于平行一類?那重合的兩直線,也屬于平行一類的嗎?
- 2非洲每年因饑餓死亡的人數(shù)及現(xiàn)在饑餓人口數(shù)量拜托各位了 3Q
- 3decide to do sth.還=什么
- 4(7/8)o you think of london?B:5.____london is one of the liveliest cities
- 5啤酒可以托運(yùn)嗎
- 6邊長為2√6的等邊三角形的中心到一邊的距離為?
- 7please give your hand to help me
- 8已知2的X次方等于3的Y次方等于6的Z次方不等等于1,證明X分之一加Y分之一等于Z分之一.
- 9幫我做做?
- 10機(jī)械分析天平TG628A的使用說明書
- 11in winter ,we wear warm coats to protect our bodies_.
- 12( )was most importance to her ,she told me,was her family it this what as