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Question
The domain of the function f: R → R defined by f(x) = `sqrt(x^2 - 3x + 2)` is ______
Solution
Here x2 – 3x + 2 ≥ 0
⇒ (x – 1)(x – 2) ≥ 0
⇒ x ≤ 1 or x ≥ 2
Hence the domain of f = `(– oo, 1] ∪ [2, oo)`
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