1.

If y=(sin^4x-cos^4x+sin^2xcos^2x)/(sin^4x+cos^4x+sin^2xcos^2x), x in(0,pi/2) , then

Answer»

`-3/2leyle1/2`
`1leyle1/2`
`-5/3leyle1`
NONE of these

Answer :C


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