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Ex 3.4
Ex 3.4, 2 Deleted for CBSE Board 2023 Exams
Ex 3.4, 3 Deleted for CBSE Board 2023 Exams
Ex 3.4, 4 Deleted for CBSE Board 2023 Exams
Ex 3.4, 5 Deleted for CBSE Board 2023 Exams
Ex 3.4, 6 Deleted for CBSE Board 2023 Exams You are here
Ex 3.4, 7 Deleted for CBSE Board 2023 Exams
Ex 3.4, 8 Important Deleted for CBSE Board 2023 Exams
Ex 3.4, 9 Deleted for CBSE Board 2023 Exams
Ex 3.4, 10 Deleted for CBSE Board 2023 Exams
Ex 3.4, 11 Deleted for CBSE Board 2023 Exams
Ex 3.4, 12 Deleted for CBSE Board 2023 Exams
Ex 3.4, 13 Deleted for CBSE Board 2023 Exams
Ex 3.4, 14 Deleted for CBSE Board 2023 Exams
Ex 3.4, 15 Important Deleted for CBSE Board 2023 Exams
Ex 3.4, 16 Deleted for CBSE Board 2023 Exams
Ex 3.4, 17 Important Deleted for CBSE Board 2023 Exams
Ex 3.4, 18 (MCQ) Deleted for CBSE Board 2023 Exams
Last updated at March 16, 2023 by Teachoo
Ex3.4, 6 Find the inverse of each of the matrices, if it exists.[ 8(2&[email protected]&3)] Let A = [ 8(2&[email protected]&3)] We know that A = IA [ 8(2&[email protected]&3)] = [ 8(1&[email protected]" " &1)] A R1 R1 R2 [ 8( &5 [email protected]&3)] = [ 8(1 0&0 [email protected]" " &1)] A [ 8( &[email protected]&3)] = [ 8(1& [email protected]" " &1)] A R2 R2 R1 [ 8(1&[email protected] &3 2)] = [ 8(1& [email protected]" " 1&1 ( 1))] A [ 8(1&[email protected] &1)] = [ 8(1& [email protected] 1&2)] A R1 R1 2R2 [ 8(1 2(0)& ( )@0&1)] = [ 8(1 2( 1)& 1 2(2)@ 1&2)] A [ 8(1& @0&1)] = [ 8(3& [email protected] 1&2)] A I = [ 8(3& [email protected] 1&2)] A This is similar to I = A-1A Thus, A-1 = [ 8(3& [email protected] 1&2" " )]