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Paragraph for Question Nos. 15 to 16 Let f:[2, ) [1, ) defined by f(x) = 2^ x^4 - 4x^2 and g: [ 2 , ] A defined by g(x) = x + 4 x - 2 be two invertible functions, then f⁻¹(x) is equal to

Options

  1. A2 + 4 - ₂ x
  2. B2 + 4 + ₂ x
  3. C4 + 2 + ₂ x
  4. D4 - 2 + ₂ x

Correct answer

B. 2 + 4 + ₂ x

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