1.

If the equation sin x(sin x + cos x)=k has real solutions then k may lie in the interval

Answer»

`[0,(SQRT(2)+1)/(2)]`
`[2-sqrt(3),2+sqrt(3)]`
`[0,2-sqrt(3)]`
`[(1-sqrt(2))/(2),(1+sqrt(2))/(2)]`

ANSWER :A::C::D


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