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Find the domain of the function\(f(x)=\frac{x^2+2x+3}{x^2-5x+6}\) |
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Answer» f is a rational function ∴ Domain of f = R – {x : x2 – 5x + 6 = 0} i. e., for function to be defined x2 – 5x + 6 ≠ 0 ⇒ x2 - 3x - 2x + 6 ≠ 0 ⇒ x (x – 3) – 2 (x – 3) ≠ 0 ⇒ (x – 3) (x – 2) ≠ 0 ∴ Domain = R – {2, 3} |
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