diketahii X=(3 1) dan I = ( 1 0 ) jika X 2 4 0 1 pangkat 2 = aX + bI, maka nilai A dan B berturut turut adalah ikut jalan nya

[tex]\left[\begin{array}{ccc}3&1\\2&4\end{array}\right] .\left[\begin{array}{ccc}3&1\\2&4\end{array}\right] =a\left[\begin{array}{ccc}3&1\\2&4\end{array}\right] +b\left[\begin{array}{ccc}1&0\\0&1\end{array}\right] \\ \\ \left[\begin{array}{ccc}11&7\\14&18\end{array}\right] = \left[\begin{array}{ccc}3a&a\\2a&4a\end{array}\right] +\left[\begin{array}{ccc}b&0\\0&b\end{array}\right] \\ \\ \left[\begin{array}{ccc}11&7\\14&18\end{array}\right]=\left[\begin{array}{ccc}3a+b&a\\2a&4a+b\end{array}\right] \\ \\ a=7 [/tex]

3a+b=11
3.7+b =11
b = 11-21
b = -10