3 years ago

If f(x)=2/(x-3) and g(x)=6/x, find (g·f)(x)

1 answer:

3 0

$(g\circ f)(x)=\dfrac{6}{\dfrac{2}{x-3}}=6\cdot\dfrac{x-3}{2}=3x-9\\\\\\ (g\cdot f)(x)=\dfrac{6}{x}\cdot \dfrac{2}{x-3}=\dfrac{12}{x^2-3x}$

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