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MHT CET2007MathematicsFunctions

If f: R R be mapping defined by f(x)=x³+5 , then f⁻¹(x) is equal to

Options

  1. A(x+5)^ 1 / 3
  2. B(x-5)^ 1 / 3
  3. C(5-x)^ 1 / 3
  4. D5-x

Correct answer

B. (x-5)^ 1 / 3

Step-by-step solution

Let y=f(x)=x³+5 array lr x=(y-5)^ 1 / 3 f⁻¹(x)=(x-5)^ 1 / 3 Given, & f(x)= a x+b c x+d array

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