Question

Dadas as matrizes calcule A+At

Answer 1

Explicação passo-a-passo:

$A=\left[\begin{array}{ccc}2&5\\7&0\\\end{array}\right] \\\\A^{t}=\left[\begin{array}{ccc}2&7\\5&0\\\end{array}\right]$

$A+A^{t}=\left[\begin{array}{ccc}2&5\\7&0\\\end{array}\right] +\left[\begin{array}{ccc}2&7\\5&0\\\end{array}\right]\\\\A+A^{t}=\left[\begin{array}{ccc}2+2&5+7\\7+5&0+0\\\end{array}\right] \\\\A+A^{t}=\left[\begin{array}{ccc}4&12\\12&0\\\end{array}\right]$