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The equation sinx(sinx+cosx)=k has real ...

The equation `sinx(sinx+cosx)=k` has real solutions where k is a real number. Then

A

`0lekle(1+sqrt(2))/(2)`

B

`2-sqrt(3)lekle2+sqrt(3)`

C

`0lekle2-sqrt(3)`

D

`(1-sqrt(2))/(2)lekle(1+sqrt(2))/(2)`

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