A function is defined by (f(x) = frac{3x + 1}{x^{2} - 1}, x neq pm
FURTHER MATHEMATICSWAEC 2011
A function is defined by \(f(x) = \frac{3x + 1}{x^{2} - 1}, x \neq \pm 1\). Find f(-3).
- A. \(-1\frac{1}{4}\)
- B. \(-1\)
- C. \(\frac{4}{5}\)
- D. \(1\)
Correct Answer: B. \(-1\)
Explanation
\(f(x) = \frac{3x + 1}{x^{2} - 1}\)
\(f(-3) = \frac{3(-3) + 1}{(-3)^{2} - 1} = \frac{-8}{8} = -1\)
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