Lmaezviz
Lmaezviz
Math
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What is the domain of the relation f(x) = 4x/ (x^2 - 9)
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Riza1viz
Riza1viz
[tex]f(x) = \frac{4x}{x^2 - 9} \\ \\Domain :\ \ x^2-9\neq 0\\\\(x-3)(x+3)\neq 0\\\\ x-3\neq 0\ \ \ \wedge \ \ \ x+3\neq 0\\\\x \neq 3\ \ \ \wedge \ \ \ x \neq -3 \\\\D=R\setminus \left \{ -3,3 \right \}[/tex]
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