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If A={:[(1,2),(-1,8),(4,9)]:}andX+A=0, t...

If `A={:[(1,2),(-1,8),(4,9)]:}andX+A=0`, then X is equal to

A

`{:[(1,2),(1,8),(4,9)]:}`

B

`{:[(-1,-2),(1,8),(4,9)]:}`

C

`{:[(1,2),(1,-8),(4,9)]:}`

D

`{:[(-1,-2),(1,-8),(-4,-9)]:}`

Text Solution

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The correct Answer is:
D
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AAKASH INSTITUTE-MATRICES-Assignment (Section - A) Objective Type Questions (One option is correct)
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  12. If A is a squqre matrix such that A^(2)=l, then A^(-1) is equal to

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  13. If X+{:[(2,1),(6,1)]:}={:[(1,1),(0,1)]:} then 'X' is equal to

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  18. Show that costheta.[{:(costheta,sintheta),(-sintheta,costheta):}]+sint...

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