Question: Suppose that for a function f, f has no x-intercepts. Which of the following must be true? a f(x) >0 for all x in the

Suppose that for a function f, f has no x-intercepts. Which of the following must be true?

a f(x) >0 for all x in the domain of f

b f is an invertible function

c The equation f(x) = 0 has no real-number solutions

d The equation f(0) = y has no real-number solutions

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