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KCET2017MathematicsDeterminants

If ( f(x)=8 x², g(x)=x^ 1 3 ) then ( f o g(x) ) is

Options

  1. A( 8 x )
  2. B( 8³ x )
  3. C( (8 x)^ 1 3 )
  4. D( 8 x³ )

Correct answer

A. ( 8 x )

Step-by-step solution

Given that, ( f(x)=8 x³ ) and ( g(x)=x^ 1 / 3 ) So, ( (f g)(x)=f g(x) ) ( =f (x^ 1 / 3 )=8 (x^ 1 / 3 )³=8 x )

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