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The set of all real value of `lambda ` for which the functio `f(x) = (1-cos^(2)x) . (lambda + sinx) , xe(-(pi)/(2) , (pi)/(2))` has exactly one maxina and exactly one minima is

A

`(-(1)/(2), (1)/(2)) - {0}`

B

`(-(3)/(2) , (3)/(2))`

C

`(-(1)/(2), (1)/(2))`

D

`(-(3)/(2) , (3)/(2)) - {0}`

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