This question was asked in Ex 4.6, 11
sir in Ex 4.6 ,11 qsn 
 the determinant of  2 1 1.  is i think 23 not 34 please
                                    1-2-1.                               check this 
                                    0 3-5.                                      

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Umair #mi
Feb. 16, 2018, 10:56 p.m.

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