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MHT CET2018MathematicsFunctions

If f : R - 2 → R is a function defined by f x = x 2 - 4 x - 2 , then range is

Options

  1. AR
  2. BR - 2
  3. CR - 4
  4. DR - - 2 , 2

Correct answer

C. R - 4

Step-by-step solution

Given f ( x ) = ( x − 2 ) ( x + 2 ) ( x − 2 ) ; ⇒ D f : R − 2 ⇒ R f : R − 4

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