JEE Main 2013 Mathematics question

Mathematics Matrices JEE Main 2013

The matrix , where I is identity matrix and , equals :

(1)Correct
(2)
(3)
(4)

Answer: (1)

Solution

. $ + 4A - 5I = 9 + 4 - 5 & -4 + 8 -8 + 16 & 17 -

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Question ID VK-103971