If [(a,b),(c,d)] is invertible then...

If `[(a,b),(c,d)]` is invertible then

A

`ad-bc=0`

B

`ad-bc!=0`

C

`ab-cd!=0`

D

`ab=cd=0`

Text Solution

Verified by Experts

The correct Answer is:

B

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Knowledge Check

If the inverse of the matrix [(1,2),(3,-5)] is 1/11[(a,b),(c,d)] then the ascending order of a,b,c,d is

A

a,b,c,d

B

d,b,c,a

C

c,a,b,d

D

b,a,c,d

If a,b,c,d are in proportion then

A

ab=cd

B

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C

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D

ad=bc

I : If a,b,c,d are four vectors then [b c d] a + [c a d] b + [a b c] c = [a b c]d II : The points with position vectors a,b,c,d are coplanar then [a b d] + [b c d] + [c a d] = [a b c]

A

only I is ture

B

Only II is ture

C

both I and II are true

D

Neither I nor II are true

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