India Languages, asked by sudhakhari3482, 11 months ago

A=((3&1@-1&2)) எனில் A^2-5A+7I_2=0 என நிறுவுக

Answers

Answered by AVINASHPONNAM
0

Answer:

please send me the question in English

Answered by steffiaspinno
0

விளக்கம்:

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

நிரூபிக்க வேண்டியவை

A^{2}-5 A+7I_2 = 0

A^{2}=A \cdot A=\left[\begin{array}{cc}3 & 2 \\-1 & 2\end{array}\right] .\left[\begin{array}{cc}3 & 2 \\-1 & 2\end{array}\right]

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

A^{2}=\left[\begin{array}{cc}8 & 5 \\-5 & 3\end{array}\right]

இடப்பக்கம்

A^{2}-5 A+7 I_{2}

=\left[\begin{array}{cc}8 & 5 \\-5 & 3\end{array}\right]-5\left[\begin{array}{cc}3 & 1 \\-1 & 2\end{array}\right]+7\left[\begin{array}{ll}1 & 1 \\0 & 1\end{array}\right]

=\left[\begin{array}{cc}8 & 5 \\-5 & 3\end{array}\right]-\left[\begin{array}{cc}-15 & -5 \\5 & -10\end{array}\right]+\left[\begin{array}{ll}7 & 0 \\0 & 7\end{array}\right]

=\left[\begin{array}{cc}8-15+7 & 5-5+0 \\-5+5+0 & 3-10+7\end{array}\right]

=\left[\begin{array}{cc}-7+7 & 0 \\0 & 3-3\end{array}\right]

=\left[\begin{array}{ll}0 & 0 \\0 & 0\end{array}\right]=0=வலப்பக்கம்

இடப்பக்கம் = வலப்பக்கம்

A^{2}-5 A+7 I_{2} = 0 என நிறுவப்பட்டது.

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