Combination Of Functions

7 Questions | Total Attempts: 352
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Combination Quizzes & Trivia

Combining functions a linear and a quadratic function.

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Questions and Answers
  • 1. 
    F(x) = x^2 – 4x – 1       &     g(x) = 3xFind: (f +g)(x).
    Discuss
    • A. 

      X^2 – 2x – 1

    • B. 

      X^2 + x – 1

    • C. 

      X^2 – x – 1

  • 2. 
    F(x) = x^2 – 4x – 1       &     g(x) = 3xFind: (f - g)(x) 
    • A. 

      -x^2 – 7x – 1

    • B. 

      X^2 – 7x – 1

    • C. 

      X^2 – x – 1

  • 3. 
    F(x) = x^2 – 4x – 1       &     g(x) = 3xFind: (g - f)(x)
    • A. 

      -x^2 + 7x - 1

    • B. 

      -x^2 + 7x + 1

    • C. 

      X^2 + 7x + 1

  • 4. 
    F(x) = x^2 – 4x – 1       &     g(x) = 3xFind: (fg)(x)
    • A. 

      3x^3 – 12x^2 – 3x

    • B. 

      3x^3 – 7x^2 – 3x

    • C. 

      3x^3 – 12x^2 – x

  • 5. 
    F(x) = x^2 – 4x – 1       &     g(x) = 3xFind: (f / g)(x)
    • A. 

      (3x^2 – 4x – 1) / 3x

    • B. 

      3(x^2 – 4x – 1) / x

    • C. 

      (x^2 – 4x – 1) / 3x

  • 6. 
    F(x) = x^2 – 4x – 1       &     g(x) = 3xFind: (f ◦ g)(x) 
    • A. 

      9x^2 – 12x^2 – 3

    • B. 

      9x^2 – 6x^2 – 3

    • C. 

      9x^2 – 12x^2 – 3x

  • 7. 
    F(x) = x^2 – 4x – 1       &     g(x) = 3xFind:  (g ◦ f)(x)
    • A. 

      3x^2 – 12x – 9

    • B. 

      3x^2 – 12x – 3

    • C. 

      3x^2 – 12x + 3

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