CBSE Class 12-commerce Answered
Find the inverse of the matrix A= (1 2 5
1 -1-1
2 3-1)
Asked by reetarora2308 | 22 Jun, 2019, 09:56: PM
Expert Answer
To find the inverse of given matrix follow steps :
1) R2 → R2 - R1 and R3 → R3 - 2R1
2) R2 → R2/-3
3) R1 → R1 - 2R2 and R3 → R3 + R2
4) R3 → R3/-9
5) R1 → R1 - 2R3 and R2 → R2 - 2R3
Answered by Sneha shidid | 25 Jun, 2019, 10:53: AM
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