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For x ∈ (0, 3/2), let f(x) = ) x ( g , x = tan x and h(x) = 2 2 x 1 x 1 + − If φ (x) = ((hof)og)(x), then φ ⎟ ⎠ ⎞ ⎜ ⎝ ⎛ π 3 is equal to :

1. 12 7 tan π
2. 12 11 tan π
3. 12 tan π
4. 12 5 tan π

Correct answer: 12 11 tan π

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