WAEC - Further Mathematics (2011 - No. 6)
A function is defined by \(f(x) = \frac{3x + 1}{x^{2} - 1}, x \neq \pm 1\). Find f(-3).
\(-1\frac{1}{4}\)
\(-1\)
\(\frac{4}{5}\)
\(1\)
Açıklama
\(f(x) = \frac{3x + 1}{x^{2} - 1}\)
\(f(-3) = \frac{3(-3) + 1}{(-3)^{2} - 1} = \frac{-8}{8} = -1\)