CBSE Class 12 Math 2009 Solved Paper

Question : 9 of 29

Marks: +1, -0

If matrix A = (1, 2, 3), write AA’, where A’ is the transpose of matrix A.

Solution:

Given : A =

[\table 1,2,3]

∴ A' =

[\table 1;2;3]

AA' =

[\table 1,2,3]

[\table 1;2;3]

[\table 1×1+2×2+3×3]

= [14]

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