# Let f : (-π/2 ,π/2) → R be given by f(x) = (log(sec x + tan x))^3 .

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Let f : (-π/2 ,π/2) → R be given by f(x) = (log(sec x + tan x))3 . Then

(A) f (x) is an odd function

(B) f (x) is a one-one function

(C) f (x) is an onto function

(D) f (x) is an even function

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(A) f (x) is an odd function

(C) f (x) is an onto function