Maths-
General
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Question

If f: R+rightwards arrow R+, f(x) = x2+ 1/x2 and g: R+rightwards arrowR+, g(x) = ex then (gof) (x) equals-

  1. e to the power of x to the power of 2 end exponent end exponent+e to the power of x to the power of negative 2 end exponent end exponent    
  2. e to the power of x to the power of 2 end exponent end exponent+fraction numerator 1 over denominator e to the power of x to the power of negative 2 end exponent end exponent end fraction    
  3. e2x+e–2x    
  4. e to the power of x to the power of 2 end exponent end exponent.e to the power of x to the power of negative 2 end exponent end exponent    

The correct answer is: e to the power of x to the power of 2 end exponent end exponent.e to the power of x to the power of negative 2 end exponent end exponent

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