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For a in [pi , 2 pi] and n in Z the cr...

For ` a in [pi , 2 pi]` and `n in Z` the critical points of g
`f(x) = 1/3 sin a tan ^3 "" x + (sin a-1)tan x + sqrt(a-2)/(8-a)` are

A

`x = n pi (n in I)` as critical points

B

no critical points

C

`x= 2n pi (n in I)` as critical points

D

`x= (2n +1) pi (n in I)` as critical points

Text Solution

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The correct Answer is:
B
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