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KCET2024MathematicsFunctions

Let f: R R be given f(x)= x . Then, f⁻¹(1) is

Options

  1. A4
  2. Bn + 4 : n Z
  3. C3
  4. Dn + 3 : n Z

Correct answer

A. 4

Step-by-step solution

f(x)= x Since, f⁻¹ is inverse of f f (f⁻¹(l) )=1 (f⁻¹(1) )=1 But ( 4 )=1 (f⁻¹(1) )= ( 4 ) f⁻¹( l )= 4

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