If f : R → R and g : R → R are defined by f(x) = x² and g(x) = x + 1, then (f∘g)(x) is:
If f : R → R and g : R → R are defined by f(x) = x² and g(x) = x + 1, then (f∘g)(x) is:
- A. x² + 1
- B. (x + 1)²
- C. x² + x + 1
- D. x² + 2x + 1
Answer: B) (x + 1)²
Explanation: (f∘g)(x) = f(g(x)) = f(x + 1) = (x + 1)².
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