Q16 of 23 Page 3

If A is a matrix and then write the value of k.(CBSE 2016)


Top of Form

Given: |3A| = k.|A|


We know that |3A| = 3n|A|.


|A| where n is the order of A.


Given that order of A is 3.


⇒ |3A| = 33.|A| = k.|A|


⇒ k = 27

More from this chapter

All 23 →
14

For what values of k, the system of linear equations


has a unique solution? (CBSE 2016)

15

If find satisfying when where is the transpose of A.(CBSE 2016)

 17

If A is a skew-symmetric matrix of order 3, then prove that det A = 0.(CBSE 2017)

 18

If be such that A–1 = kA, then find the value of k.(CBSE 2018)