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Let P = { x : x in R , |x| < 2} Q = {x...

Let `P = { x : x in R , |x| < 2}`
`Q = {x:x in R , |x -1 |ge 2}`
`P uu Q = R - S` then set S is : (where R is the set of real number)

A

`[-2,2]`

B

`[2,3]`

C

`[2,3)`

D

`(-1,2]`

Text Solution

AI Generated Solution

The correct Answer is:
To solve the problem, we need to find the sets \( P \) and \( Q \) and then determine the set \( S \) such that \( P \cup Q = \mathbb{R} - S \). ### Step 1: Define the Set \( P \) The set \( P \) is defined as: \[ P = \{ x : x \in \mathbb{R}, |x| < 2 \} \] This means that \( P \) includes all real numbers \( x \) such that the absolute value of \( x \) is less than 2. To express this in interval notation: \[ P = (-2, 2) \] ### Step 2: Define the Set \( Q \) The set \( Q \) is defined as: \[ Q = \{ x : x \in \mathbb{R}, |x - 1| \geq 2 \} \] This can be rewritten as two inequalities: 1. \( x - 1 \geq 2 \) which simplifies to \( x \geq 3 \) 2. \( x - 1 \leq -2 \) which simplifies to \( x \leq -1 \) Thus, the set \( Q \) can be expressed in interval notation as: \[ Q = (-\infty, -1] \cup [3, \infty) \] ### Step 3: Find the Union of Sets \( P \) and \( Q \) Now, we need to find the union of sets \( P \) and \( Q \): \[ P \cup Q = (-2, 2) \cup \left( (-\infty, -1] \cup [3, \infty) \right) \] To visualize this: - The interval \( (-2, 2) \) covers all numbers between -2 and 2. - The interval \( (-\infty, -1] \) covers all numbers less than or equal to -1. - The interval \( [3, \infty) \) covers all numbers greater than or equal to 3. Combining these intervals, we can write: \[ P \cup Q = (-\infty, -1] \cup (-2, 2) \cup [3, \infty) \] ### Step 4: Identify the Set \( S \) Given that \( P \cup Q = \mathbb{R} - S \), we need to find \( S \). The union \( P \cup Q \) covers all real numbers except for the interval \( (-1, 2) \). Thus, the set \( S \) is: \[ S = (-1, 2) \] ### Conclusion The final answer is: \[ S = (-1, 2) \]

To solve the problem, we need to find the sets \( P \) and \( Q \) and then determine the set \( S \) such that \( P \cup Q = \mathbb{R} - S \). ### Step 1: Define the Set \( P \) The set \( P \) is defined as: \[ P = \{ x : x \in \mathbb{R}, |x| < 2 \} \] ...
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