• Matéria: Matemática
  • Autor: isabelamoraessp7esxs
  • Perguntado 6 anos atrás

Sendo A²= [1 2] calcule: 3A – A + I2
3 4​

Anexos:

quantumachine: to interpretando esse l2 como linha 2

Respostas

respondido por: quantumachine
1

A_2=\left[\begin{array}{cc}1&2\\3&4\\ \end{array}\right]

calcular 3A-A+l2

3.\left[\begin{array}{cc}1&2\\3&4\\ \end{array}\right] -\left[\begin{array}{cc}1&2\\3&4\\ \end{array}\right] +\left[\begin{array}{cc}0&0\\3&4\\ \end{array}\right]=\left[\begin{array}{cc}3&6\\9&12\\ \end{array}\right]-\left[\begin{array}{cc}1&2\\3&4\\ \end{array}\right] +\left[\begin{array}{cc}0&0\\3&4\\ \end{array}\right]  =\\\\\left[\begin{array}{cc}3&6\\9&12\\ \end{array}\right]-\left[\begin{array}{cc}1&2\\6&8\\ \end{array}\right] =\left[\begin{array}{cc}2&4\\3&4\\ \end{array}\right]

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