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Задача Задача №1679235
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30 сентября 2024 16:14 · публичный вопрос
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((Х-1)/х)-((х+1)/х-1)<2

Нейросеть30 сентября 2024 16:14

To solve the inequality

\[ \frac{(x-1)}{x} - \left(\frac{(x+1)}{x} - 1\right) < 2, \]

let's start by simplifying the left-hand side of the inequality.

  1. The expression \(\frac{(x+1)}{x} - 1\) can be simplified:

\[ \frac{x+1}{x} - 1 = \frac{x+1 - x}{x} = \frac{1}{x}. \]

So, the entire left-hand side becomes:

\[ \frac{x-1}{x} - \frac{1}{x} = \frac{x-1-1}{x} = \frac{x-2}{x}. \]

  1. Now we can rewrite the inequality:

\[ \frac{x-2}{x} < 2. \]

  1. To eliminate the fraction, multiply both sides of the inequality by \(x\). Note that the sign of the inequality will change if \(x < 0\), so we will consider the cases where \(x > 0\) and \(x < 0\) separately.

For \(x > 0\):

\[ x - 2 < 2x. \]

Subtract \(x\) from both sides:

\[ -2 < x. \]

Thus, for \(x > 0\), we have \(x > 2\).

  1. For \(x < 0\), the inequality becomes:

\[ x - 2 > 2x. \]

Rearranging gives:

\[ -2 > x. \]

  1. Therefore, combining both cases, we find the solutions:
  • For \(x > 0\), we have \(x > 2\).
  • For \(x < 0\), we have \(x < -2\).
  1. Finally, the solution to the inequality is:

\[ x < -2 \quad \text{or} \quad x > 2. \]

In interval notation, the solution is:

\[ (-\infty, -2) \cup (2, \infty). \]

((Х-1)/х)-((х+1)/х-1)<2
To solve the inequality \[ \frac{(x-1)}{x} - \left(\frac{(x+1)}{x} - 1\right) < 2, \] let's start by simplifying the left-hand side of the inequality. 1. The expression \(\frac{(x+1)}{x} - 1\) can be simplified: \[ \frac{x+1}{x} - 1 = \frac{x+1 - x}{x} = \frac{1}{x}. \] So, the entire left-hand side becomes: \[ \frac{x-1}{x} - \frac{1}{x} = \frac{x-1-1}{x} = \frac{x-2}{x}. \] 2. Now we can rewrite the inequality: \[ \frac{x-2}{x} < 2. \] 3. To eliminate the fraction, multiply both sides of the inequality by \(x\). Note that the sign of the inequality will change if \(x < 0\), so we will consider the cases where \(x > 0\) and \(x < 0\) separately. For \(x > 0\): \[ x - 2 < 2x. \] Subtract \(x\) from both sides: \[ -2 < x. \] Thus, for \(x > 0\), we have \(x > 2\). 4. For \(x < 0\), the inequality becomes: \[ x - 2 > 2x. \] Rearranging gives: \[ -2 > x. \] 5. Therefore, combining both cases, we find the solutions: - For \(x > 0\), we have \(x > 2\). - For \(x < 0\), we have \(x < -2\). 6. Finally, the solution to the inequality is: \[ x < -2 \quad \text{or} \quad x > 2. \] In interval notation, the solution is: \[ (-\infty, -2) \cup (2, \infty). \]