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May 5th, 2017, 09:58 AM   #1
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Matrix problem

I'm sorry I don't know where to put this question
Please someone solve following questions step by step
I have exam after 4 days

1) show that:
| a+x a a |
| a a+x a |
| a a a+x |


2) Evalute the determinate
| a+x a a |
| a a+x a |
| a a a+x |
Expanding by second row


3) Find inverse by adjoint method
| 1 3 5 |
| 2 4 7 |
| 9 8 6 |


4) if
A =
| i 0 | and
| i i |

B =
| 0 -1 |
| 1 0 |
verify that A² = B² = -12



5) Solve
| 1 a b |
| 1 x b | = 0
| 1 c x |


6) Show that
| 1 1 1 |
| p q r | = (p-q) (q-r) (r-p)
| qr rp pq |

Last edited by ahmed786; May 5th, 2017 at 10:02 AM.
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