1.

Let f : (-1,1) rarr R such that f(cos 4 theta) = 2 /(2-sec^2 theta)for theta in (0,(pi)/(4)) cap (pi/2,pi/2) . Then the value (s) of f(1/3)is /are

Answer»

`1-sqrt(3/2)`
`1+sqrt(3/2)`
`1-sqrt(2/3)`
`1+sqrt(2/3)`

ANSWER :A::B


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