Нам нужно вычислить значение выражения $$\frac{x+5}{x-3}$$ для каждого значения x, указанного в таблице.
x = -13:
$$ \frac{-13 + 5}{-13 - 3} = \frac{-8}{-16} = \frac{1}{2} = 0.5 $$x = -5:
$$ \frac{-5 + 5}{-5 - 3} = \frac{0}{-8} = 0 $$x = -0.2:
$$ \frac{-0.2 + 5}{-0.2 - 3} = \frac{4.8}{-3.2} = -1.5 $$x = 0:
$$ \frac{0 + 5}{0 - 3} = \frac{5}{-3} = -\frac{5}{3} = -1\frac{2}{3} \approx -1.6667 $$x = $$\frac{1}{17}$$:
$$ \frac{\frac{1}{17} + 5}{\frac{1}{17} - 3} = \frac{\frac{1 + 85}{17}}{\frac{1 - 51}{17}} = \frac{\frac{86}{17}}{\frac{-50}{17}} = \frac{86}{-50} = -\frac{43}{25} = -1.72 $$x = 1:
$$ \frac{1 + 5}{1 - 3} = \frac{6}{-2} = -3 $$x = $$5\frac{2}{3} = \frac{17}{3}$$:
$$ \frac{\frac{17}{3} + 5}{\frac{17}{3} - 3} = \frac{\frac{17 + 15}{3}}{\frac{17 - 9}{3}} = \frac{\frac{32}{3}}{\frac{8}{3}} = \frac{32}{8} = 4 $$x = 7:
$$ \frac{7 + 5}{7 - 3} = \frac{12}{4} = 3 $$| x | -13 | -5 | -0.2 | 0 | $$\frac{1}{17}$$ | 1 | $$5\frac{2}{3}$$ | 7 |
|---|---|---|---|---|---|---|---|---|
| $$\frac{x+5}{x-3}$$ | 0.5 | 0 | -1.5 | $$-1\frac{2}{3}$$ | -1.72 | -3 | 4 | 3 |