Qual o valor do determinante?

anonymousanonymous
in Science & Mathematics

Dada a matriz:

| 2 1 1|

|5 3 2|

|B 3 5|

Comments

  • math-girlmath-girl

    2 1 1 2 1

    5 3 2 5 3

    B 3 5 B 3

    (2*3*5) + (1*2*B) + (1*5*3) - (1*3*B) - (2*2*3) - (1*5*5) =

    30 + 2B + 15 - 3B - 12 - 25 =

    -B + 8

    Resposta: - B + 8

    Kisses

    =**

  • rond1ph3lrond1ph3l

    2.3.5 + 1.2.B + 5.3.1 - 3B -3.2.2 - 5.1.5

    30 + 2B + 15 - 3B - 12 - 25

    20 - B - 12

    8 - B

  • helena-assunao-helena-assunao-

    faz ai:

    |2 1 1| 2 1

    |5 3 2| 5 3

    |B 3 5| B 3

    (2*3*5) + (1*2*B) + (1*5*3) - (B*3*1) - (3*2*2) - (5*5*1)=

    30 + 2B + 15 - 3B - 12 - 25=

    -B + 8=0

    -B = -8 *(-1)

    B=8

  • valeria-ama-vicentevaleria-ama-vicente

    A DETERMINAÇÂO

  • marlene-filipe-fmarlene-filipe-f

    O valor do determinante é igual a 2.

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