Posted by **Amy** on Tuesday, October 4, 2011 at 11:18pm.

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

- Calculus -
**Steve**, Wednesday, October 5, 2011 at 5:14am
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,+∞)

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