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If M(2) be the set of all 2xx2 matrices...

If `M_(2)` be the set of all `2xx2` matrices of the form `{:((a,a),(a,a)):},` where `ainR-{0}`, then the identity element with respect to the multiplication of matrices as binary operation, is--

A

`{:((1,1),(1,1)):},`

B

`{:((-1/2,-1/2),(-1/2,-1/2)):}`

C

`{:((1/2,1/2),(1/2,1/2)):}`

D

`{:((-1,-1),(-1,-1)):}`

Text Solution

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The correct Answer is:
C
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