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Asked by Amy

Find the Domain of f(x)=sqrt(x^3-4x+1)
14 years ago

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Answered by Steve
The domain is the values of x where f(x) is defined. The square root requires the radicand to be ≥ 0.

So, x^3 - 4x + 1 ≥ 0

x ∈ [-2.1,0.24] ∪ [1.83,+∞)
14 years ago
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