Mathematics
Grade10
Easy

Question

If f(x) = x- 2 , g(x) = -2x , evaluate f (g(1))
 

  1. -4
  2. -2
  3. 2
  4. 4

The correct answer is: 2


    To find the value of f (g(1)) for the given functions f(x) = x2 - 2 and g(x) = -2x .
    Given f(x) = x2 - 2 , g(x) = -2x
    g(1) = -2 × 1 = -2
    f(g(1)) = f(-2) = (-2)2 - 2 = 4 - 2 = 2

    The value of f (g(1)) for the given functions f(x) = x2 - 2 and g(x) = -2x is 2.

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