Question

gente, alguém me ajuda aí, por favoooorrrrr​

Answer 1

Resposta:

1-

A) A - 5B

B = ( 2 -3 ) . 5 = ( 10 -15 )

( 4 -1 ) ( 20 -5 )

A= ( 0 3 ) __ 5B = ( 10 -15 )

( 1 2 ) ( 20 -5 )

R= ( -10 18)

( -19 7 )

B) 3A + B - 2C

A = ( 0 3 ) . 3 = ( 0 9 )

( 1 2 ) ( 3 6 )

C = ( 8 3 ) . 2 = ( 16 6 )

(-2 1 ) ( -4 2 )

3A = ( 0 9 ) + B = ( 2 -3 ) = ( 2 6 )

( 3 6 ) ( 4 -1) ( 7 5 )

3A + B = ( 2 6 ) __ 2C = ( 16 6 )

( 7 5 ) ( -4 2 )

R = ( -14 0 )

( 11 3 )

2-

A) A² = A . A

A = ( 3 2 1 )

( 2 1 0 )

(-1 1 -1 )

R= A² ou A . A

( 9 4 1 )

( 4 1 0 )

( -1 1 -1 )

B) A . At

At = ( 3 2 -1 )

( 2 1 1 )

( 1 0 -1 )

A = ( 3 2 1 ) . At = ( 3 2 -1 )

( 2 1 0 ) ( 2 1 1 )

(-1 1 -1 ) ( 1 0 -1 )

( 9 4 1 ) ( 6 2 0 ) ( -3 2 -1 )

( 6 2 0 ) + ( 4 1 0 ) + ( -2 1 0 )

(-3 2 -1 ) ( -2 1 0 ) ( -1 1 -1 )

R = ( 12 8 0 )

( 8 4 0 )

( -6 4 -2 )

Espero ter ajudado, bons estudos!! ❤️