![A=\left[\begin{array}{cc}1&2\\4&5\end{array}\right] \\\\|A|=(5)(1)-(2)(4)\\\\|A|=-3---(1)](/tpl/images/0454/8659/39a5e.png)
![A=\left[\begin{array}{cc}1&2\\4&5\end{array}\right] \\\\|A|=-3\\\\Adj(A)=\left[\begin{array}{cc}5&-2\\-4&1\end{array}\right] \\\\\\A^{-1}=\frac{Adj(A)}{|A|}\\\\A^{-1}=\left[\begin{array}{cc}\frac{5}{-3}&\frac{-2}{-3}\\\frac{-4}{-3}&\frac{1}{-3}\end{array}\right] \\\\\\|A^{-1}|=(\frac{5}{-3})(\frac{1}{-3})-(\frac{-4}{-3})(\frac{-2}{-3})\\\\|A^{-1}|=\frac{5}{9}-\frac{8}{9}\\\\|A^{-1}|=\frac{-1}{3}](/tpl/images/0454/8659/9b101.png)
If a is nonsingular, then det a−1= 1/(det a). verify this
theorem for 2 3 2 matrices....
Mathematics, 14.01.2020 21:31, zozo9987
If a is nonsingular, then det a−1= 1/(det a). verify this
theorem for 2 3 2 matrices.
Answers: 3
Other questions on the subject: Mathematics
Mathematics, 21.06.2019 14:00, williams5847
Chanelle deposits $7,500 into the bank. she does not withdraw or deposit money for 6 years. she earns 6% interest during that time. what will the balance be when she is finally able to withdraw her money?
Answers: 1
Mathematics, 21.06.2019 19:00, heartykwarteng12
The reflexive property of congruence lets you say that ∠pqr ≅
Answers: 1
Do you know the correct answer?
Questions in other subjects:
Chemistry, 13.10.2019 22:10
Mathematics, 13.10.2019 22:10
Mathematics, 13.10.2019 22:10
English, 13.10.2019 22:10
