Question 21

This question refers to a figure in the original PDF.

• (A)x ∈ (– ∞, )
• (B)x ∈ (– ∞, ] 2 2 2 Fig 6.10 7 7
• (C)x ∈ [ , – ∞)
• (D)x ∈ ( , ∞) 2 2