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Evaluate |{:(2,4),(-1,2):}|...

Evaluate `|{:(2,4),(-1,2):}|`

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Using cofactors of elements of second row evaluate |{:(1,-3,2),(4,-1,2),(3,5,2):}|"

Evaluate the determinants below in examples number 1 and 2 |{:(2,4),(-5,-1):}|

Knowledge Check

  • Find values of x,if (i) |{:(2,4),(5,1):}|=|{:(2x,4),(6,x):}|

    A
    1
    B
    `thereforex=+-sqrt2`
    C
    `thereforex=+-sqrt3`
    D
    2

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