dela244
dela244 dela244
  • 16-10-2021
  • Mathematics
contestada

A and B are matrices. If A= [1 2] find B given that
[4 3]
A²=A+B​

Respuesta :

sqdancefan
sqdancefan sqdancefan
  • 16-10-2021

9514 1404 393

Answer:

  B = [[8, 6][12, 14]]

Step-by-step explanation:

Subtract A from both sides to get ...

  A² -A = A+B -A = B

Factor out A, and you have ...

  A(A -I) = B . . . . . where I is the 2×2 identity matrix

  [tex]\left[\begin{array}{cc}1&2\\4&3\end{array}\right] \cdot\left[\begin{array}{cc}0&2\\4&2\end{array}\right]=\left[\begin{array}{cc}8&6\\12&14\end{array}\right]=\textbf{B}[/tex]

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