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Let RR be the set of all real numbers a...

Let `RR ` be the set of all real numbers and `f(x) = sin^(10) x ( cos^8 x + cos^4 x + cos^4 x + cos^2 x +1)` for x ` in RR ` . Let ` S= { lamda in RR|` there exits a point ` c in ( 0,2) ` with ` f'(c ) = lamda f (c ) }.` then

A

`S= RR`

B

`S={0}`

C

`S=[0,2 pi]`

D

S is a finite set having more than one element

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A
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