A、 INCLUDEPICTURE \d "https://p.ananas.chaoxing.com/star3/origin/cbfa63facc47534b5791c0edb3985858.png" \* MERGEFORMATINET
B、 INCLUDEPICTURE \d "https://p.ananas.chaoxing.com/star3/origin/f00401a0806543e0c700b626719028d3.png" \* MERGEFORMATINET
C、 INCLUDEPICTURE \d "https://p.ananas.chaoxing.com/star3/origin/b68a546fa6a2abd42fdf096156b763f0.png" \* MERGEFORMATINET
D、 INCLUDEPICTURE \d "https://p.ananas.chaoxing.com/star3/origin/d7b17fc70b316cb4a0d33d9111f5a0fe.png" \* MERGEFORMATINET
答案:C
A、 INCLUDEPICTURE \d "https://p.ananas.chaoxing.com/star3/origin/cbfa63facc47534b5791c0edb3985858.png" \* MERGEFORMATINET
B、 INCLUDEPICTURE \d "https://p.ananas.chaoxing.com/star3/origin/f00401a0806543e0c700b626719028d3.png" \* MERGEFORMATINET
C、 INCLUDEPICTURE \d "https://p.ananas.chaoxing.com/star3/origin/b68a546fa6a2abd42fdf096156b763f0.png" \* MERGEFORMATINET
D、 INCLUDEPICTURE \d "https://p.ananas.chaoxing.com/star3/origin/d7b17fc70b316cb4a0d33d9111f5a0fe.png" \* MERGEFORMATINET
答案:C
A. ACB=E
B. CBA=E
C. BAC=E
D. BCA=E
A. 若干个可逆的n阶矩阵之积可逆,且其逆为这些矩阵的逆按相同顺序的乘积
B. 若A可逆,则 INCLUDEPICTURE \d "http://mooc1-api.chaoxing.com/ananas/latex/p/34176" \* MERGEFORMATINET 的逆就是A本身。
C. INCLUDEPICTURE \d "https://p.ananas.chaoxing.com/star3/origin/59948f7de2981a3968f6f48a17b271e7.png" \* MERGEFORMATINET
D. 若A是3阶矩阵,且方程 INCLUDEPICTURE \d "https://p.ananas.chaoxing.com/star3/origin/51b7a79a8c8b2da9d131cce3a4d20f8f.png" \* MERGEFORMATINET 有唯一解,则A可逆
A. x=1,y=4
B. x=1,y=-4
C. x=-1,y=-4
D. x=-1,y=4
A. “甲种产品滞销,乙种产品畅销”
B. “甲、乙两种产品均畅销”
C. “甲种产品滞销”
D. “甲种产品滞销或乙种产品畅销”
A. e是割点
B. {a, e}是点割集
C. {b, e}是点割集
D. {d}是点割集
A. 36
B. 37
C. 38
D. 39