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CBSE Class 12-science Answered

Proof LHS=RHS
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Asked by shivamaihar25 | 03 Jul, 2021, 10:33: PM
answered-by-expert Expert Answer
Let Matrix A = begin mathsize 14px style open square brackets table row 2 0 cell negative 1 end cell row 5 1 0 row 0 1 3 end table close square brackets end style  and Matrix B = begin mathsize 14px style open square brackets table row 3 cell negative 1 end cell 1 row cell negative 15 end cell 6 cell negative 5 end cell row 5 cell negative 2 end cell 2 end table close square brackets end style
If A-1 = B , then   A × B  = I  , where I is unit matrix of order 3 x 3 
 
BY matrix multiplication, it can be proved that product of matrix A and matrix B is unit matrix .
 
Hence , A-1 = B
Answered by Thiyagarajan K | 19 Sep, 2021, 12:43: AM

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