If A is a nonsingular [img=36x19]17de932d7252e24.png[/img] matrix, show that[img=35x23]17de932d800355c.png[/img] is ________ and det([img=35x23]17de932d8d1c265.png[/img])=_______.
A: nonsingular >;0
B: nonsingular <;0
C: singular >;0
D: singular <;0
A: nonsingular >;0
B: nonsingular <;0
C: singular >;0
D: singular <;0
举一反三
- If A is a nonsingular matrix, then [img=107x28]1803c4e59f42f1b.png[/img].
- 下列4个集合中是空集的是() A: {x|[img=18x22]1802f060e2f728f.png[/img]+1=0} B: {x|[img=18x22]1802f060e2f728f.png[/img]<-x} C: {x|[img=18x22]1802f060e2f728f.png[/img]=0} D: {x|[img=18x22]1802f060e2f728f.png[/img]-1=0}
- 下列4个集合中是空集的是() A: {x|[img=18x22]1803d021d498831.png[/img]+1=0} B: {x|[img=18x22]1803d021d498831.png[/img]<-x} C: {x|[img=18x22]1803d021d498831.png[/img]=0} D: {x|[img=18x22]1803d021d498831.png[/img]-1=0}
- 下列4个集合中是空集的是() A: {x|[img=18x22]1803d0240bcad39.png[/img]+1=0} B: {x|[img=18x22]1803d0240bcad39.png[/img]-x} C: {x|[img=18x22]1803d0240bcad39.png[/img]=0} D: {x|[img=18x22]1803d0240bcad39.png[/img]-1=0}
- 已知[img=220x43]1802fca0bce8129.png[/img],则为()。 A: x(0)=0 B: x(0)=1 C: x(∞)=2 D: x(∞)=∞