Question

[tex]1) A= \left[\begin{array}{ccc}4&6&&-2&-3\end{array}\right] Cal.det (A)

2) A= \left[\begin{array}{ccc}4&3\\2&1\\\end{array}\right] Cal.det. (A^2-2A-I2)

3) A= \left[\begin{array}{ccc}-1&2&2\\2&2&-1\\\end{array}\right] *apartine* M_{2,3} (R) Cal.det. (A)

4) Rez. in R ecuatia \left[\begin{array}{ccc}1&1&x\\1&x&1\\x&1&x\end{array}\right] =0
[/tex]

Answer 1

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