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If M is a 2xx2 matrix such that [(1),(-1)]=[(-1),(2)] and M^(2)[(1),(-1)]=[(1),(0)] then sum of elements of M is |
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Answer» SOLUTION :Let`M=[[a,b],[c,d]]` Now, `M [[1],[-1]] = [[-1],[2]] & M^(2) [[1],[-1]]=[[1],[0]]` `impliesa=-1,b=0, c=4,d=2` `THEREFORE (a+b+c+d) = 5` |
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