Home
Class 12
MATHS
If detA=7, where A=[(a,b,c),(d,e,f),(g,h...

If `detA=7`, where `A=[(a,b,c),(d,e,f),(g,h,i)]` then `det(2A)^(-1)=`

A

`1/14`

B

`1/49`

C

`1/56`

D

`7/2`

Text Solution

Verified by Experts

The correct Answer is:
C
Promotional Banner

Topper's Solved these Questions

  • MATRICES

    DIPTI PUBLICATION ( AP EAMET)|Exercise EXERCISE 1A MCQ (ALGEBRA OF MATRICES)|135 Videos

  • MATRICES

    DIPTI PUBLICATION ( AP EAMET)|Exercise EXERCISE 1B MCQ (DETERMINANTS)|189 Videos

  • MATHEMATICAL REASONING [APPENDIX - 4]

    DIPTI PUBLICATION ( AP EAMET)|Exercise Exercise|150 Videos

  • MEASURES OF DISPERSION

    DIPTI PUBLICATION ( AP EAMET)|Exercise EXERCISE-2 ( SET -4)|2 Videos

Similar Questions

Explore conceptually related problems

|(a,h,g),(h,b,f),(g,f,c)|=

If A=[(a,b),(c,d)],I=[(1,0),(0,1)] then A^(2)-(a+d)A=

If a, b, c, d, e, f are in A.P then e-c=

[(x,y,z)][(a,h,g),(h,b,f),(g,f,c)][(x),(y),(z)]=

Let f={(1,a),(2,c),(4,d),(3,b)} and g^(-1) = {(2,a),(4,b),(1,c),(3,d)} then show that (gof)^(-1) = f^(-1) og^(-1) .

Find the determinant of the matrix [(a,h,g),(h,b,f),(g,f,c)]