My Math Forum Matrix problem

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 May 5th, 2017, 08:58 AM #1 Newbie   Joined: May 2017 From: Pakistan Posts: 7 Thanks: 0 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 09:02 AM.

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