Question 15 - CBSE Class 12 Sample Paper for 2022 Boards (MCQ Based - for Term 1) - Solutions of Sample Papers and Past Year Papers - for Class 12 Boards
Last updated at Sept. 4, 2021 by Teachoo
For matrix A = [8(2 5 -11 7)], (adj A)β is equal to
Question 15 For matrix A = [β 8(2&5@β11&7)], (adj A)β is equal to (a) [β 8(2&5@β11&7)] (b) [β 8(7&5@11&2)] (c) [β 8(7&11@β5&2)] (d) [β 8(7&β5@11&2)]
A =[β 8(2&5@β11&7)]
Now,
adj A = [β 8(2&5@β11&7)]
=[β 8(π&βπ@ππ&π)]
Thus,
(adj A)β = [β 8(7&11@β5&2)]
So, the correct answer is (C)
Made by
Davneet Singh
Davneet Singh is a graduate from Indian Institute of Technology, Kanpur. He has been teaching from the past 12 years. He provides courses for Maths and Science at Teachoo.
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