If the function f : R → R defined by f(x) = ax + b is bijective, then:
If the function f : R → R defined by f(x) = ax + b is bijective, then:
- A. a = 0, b = 0
- B. a = 0, b ≠ 0
- C. a ≠ 0
- D. a = 1, b = 0
Answer: C) a ≠ 0
Explanation: f(x) = ax + b is bijective on R iff a ≠ 0. If a = 0, f is constant, not one-one and not onto.
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