Question

1) 2x-1/x при x=3; 1; -5; 1/2; -1,6; 100;​

Answer 1

Ответ:

Ответ на фото

Объяснение:

Answer 2

To find the values of the expression $2x - \frac{1}{x}$ for the given values of $x$, simply substitute each value of $x$ into the expression and perform the calculations. Let's compute the results:

1. For $x = 3$: $2 \times 3 - \frac{1}{3} = 6 - \frac{1}{3} = \frac{17}{3}$

2. For $x = 1$: $2 \times 1 - \frac{1}{1} = 2 - 1 = 1$

3. For $x = -5$: $2 \times (-5) - \frac{1}{-5} = -10 - (-0.2) = -9.8$

4. For $x = \frac{1}{2}$: $2 \times \frac{1}{2} - \frac{1}{\frac{1}{2}} = 1 - 2 = -1$

5. For $x = -1.6$: $2 \times (-1.6) - \frac{1}{-1.6} = -3.2 - (-0.625) = -2.575$

6. For $x = 100$: $2 \times 100 - \frac{1}{100} = 200 - 0.01 = 199.99$

So, the values of the expression $2x - \frac{1}{x}$ for the given values of $x$ are:

$x = 3$ : $\frac{17}{3}$
$x = 1$ : $1$
$x = -5$ : $-9.8$
$x = \frac{1}{2}$ : $-1$
$x = -1.6$ : $-2.575$
$x = 100$ : $199.99$