Question

construir a matriz B =(bij) 1×3, tal que bij= i - 4j.

Answer 1

$\left[\begin{array}{ccc}b11&b12&b13\\\end{array}\right]$

1-4.1 = -3

1-4.2 = -7

1-4.3 = -11

então

$\left[\begin{array}{ccc}-3&-7&-11\\\end{array}\right]$

ok