Mejia Mann
01/18/2024 · High School
\( ( - 2,3 ) \cap [ - 1,4 ) = [ - 1,4 ) \)
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Tutor-Verified Answer
Step-by-step Solution
To find the intersection of the intervals \( (-2, 3) \) and \( [-1, 4) \), we need to determine the set of points that are in both intervals.
1. **Interval \( (-2, 3) \)**: This interval includes all real numbers \( x \) such that \( -2 < x < 3 \).
2. **Interval \( [-1, 4) \)**: This interval includes all real numbers \( x \) such that \( -1 \leq x < 4 \).
Now, let's find the intersection \( (-2, 3) \cap [-1, 4) \):
- The lower bound of the intersection will be the maximum of the lower bounds of the two intervals. The lower bound of \( (-2, 3) \) is \(-2\) and the lower bound of \( [-1, 4) \) is \(-1\). The maximum of these two is \(-1\).
- The upper bound of the intersection will be the minimum of the upper bounds of the two intervals. The upper bound of \( (-2, 3) \) is \(3\) and the upper bound of \( [-1, 4) \) is \(4\). The minimum of these two is \(3\).
Thus, the intersection is:
\[
[-1, 3)
\]
So, the statement \( ( - 2,3 ) \cap [ - 1,4 ) = [ - 1,4 ) \) is incorrect. The correct intersection is:
\[
(-2, 3) \cap [-1, 4) = [-1, 3)
\]
Quick Answer
The correct intersection is \( [-1, 3) \).
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