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The maximum value of =[[1, 1, 1],[ 1, 1...

The maximum value of `=[[1, 1, 1],[ 1, 1+sintheta,1],[ 1,1,1+costheta]]` `(a)1/2` (b)`` `(sqrt(3))/2` (c) `sqrt(2)` (d) `-(sqrt(3))/2`

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`=[[1, 1, 1],[ 1, 1+sintheta,1],[ 1,1,1+costheta]]`
applying `c_1​=c_1​−c_2`​ and `c_2​=c_2​−c_3`
`=[[0, 0, 1],[ -sintheta, sintheta,1],[0,-costheta ,1+costheta]]`
`=1(sinθcosθ−0)`
`=1/2​.(2sinθcosθ)`
...
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