Cho A
và
B
là các ma trận vuông cấp n thỏa
1 A PBP

, với
P
là ma trận vuông cấp n khả
nghịch. Phát biểu nào sau đây là sai
A. A khả nghịch khi và chỉ khi B khả nghịch B.
3 1 3 B P A P 

C.
3 1 3 3 3 B (P ) A P 

D. Giả sử A khả nghịch, ta có
1 1 det(A ) det(B )  
 .

51-50

step-by-step explanation:

no because after the troops were pulled many blacks were killed by hangings lynchings and other cruel ways which in a way interrupted the reconstruction of the south and differed from the way abraham lincoln had an idea of reconstruction

a mantle plume is an upwelling of abnormally hot rock within the earth's mantle. as the heads of mantle plumes can partly melt when they reach shallow depths, they are thought to be the cause of volcanic centers known as hotspots and probably also to have caused flood basalts.

step-by-step explanation:

1.) 21

2.) 0.453

3.) 1.5

4.) 48

5.) $ 22

step-by-step explanation: