CBSE Class 12 Sample Paper for 2021 Boards

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Solutions of Sample Papers and Past Year Papers - for Class 12 Boards

Question 20 (Choice 2) - CBSE Class 12 Sample Paper for 2021 Boards - Solutions of Sample Papers and Past Year Papers - for Class 12 Boards

Last updated at April 16, 2024 by

If A = [3, 1   -1, 2], show that A 2 − 5A + 7I = O. Hence find A −1 .

 

This question is exactly same as Ex 4.5, 13 of Chapter 4 Class 12 in the NCERT Book.

Please check the answer and video here

https://www.teachoo.com/3250/692/Ex-4.5--13---Show-that-A2---5A---7I--O.-Hence-find-A-1/category/Ex-4.5/

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Davneet Singh has done his B.Tech from Indian Institute of Technology, Kanpur. He has been teaching from the past 14 years. He provides courses for Maths, Science and Computer Science at Teachoo