Question

Com base nas matrizes A= ( 4 5)(20 1) e B= ( x+y 3x-y)(5 1) calcule o valor de x+y, sendo A=B elevado a t

Answer 1

Resposta:

Leia abaixo

Explicação passo-a-passo:

$A = \large\mathsf{\begin{vmatrix}4&5\\20&1\end{vmatrix}}$

$B = \large\mathsf{\begin{vmatrix}x + y&3x - y\\5&1\end{vmatrix}}$

$\boxed{\boxed{A = B^{-1}}}$

$B^{-1} = \large\mathsf{\begin{vmatrix}x + y&5\\3x - y&1\end{vmatrix}} = \large\mathsf{\begin{vmatrix}4&5\\20&1\end{vmatrix}}$

$\boxed{\boxed{x + y = 4}}$