[MATEMATICA] Dadas as matrizes:?

titititi
in Science & Mathematics

A= ( 2 2) e B= ( 1 2 )

.....( 1 4) .........( 1 1 ) , calcule a seguinte expressão AB-6.A-1(matriz inversa de A)

Comments

  • lemoswlemosw

    AB-6.A-1

    AB=

    2 2ll1 2l= l 2+2... 4+2 l= l 4 6 l

    1 4ll1 1l.. l 1+4....2+4 l.. l5 6 l

    6A=

    12 12

    6 24

    AB-6.A=

    4 6 l - l12 12 l= l -8 -6 l

    5 6 l ... l 6 24l .. l -1 -18l

    AB-6.A-1=

    -8 -6 l - l 1 0 l= l -9 -6 l

    -1 -18 l ..l 0 1 l .. l-1 -19 l

    Resp

    -9 - 6

    -1 -19

    ////////////////////////////////////////

  • anonymousanonymous

    NAO SEI

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