Curry Weber
06/07/2023 · Junior High School
\( \left. \begin{array} { l } { x - 2 } \\ { x + 1 } \end{array} \right. \leq 0 \)
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Step-by-step Solution
To solve the inequality
\[
\begin{pmatrix} x - 2 \\ x + 1 \end{pmatrix} \leq 0,
\]
we need to analyze each component of the vector separately. This means we will solve the following two inequalities:
1. \( x - 2 \leq 0 \)
2. \( x + 1 \leq 0 \)
### Solving the first inequality:
1. \( x - 2 \leq 0 \)
Adding 2 to both sides gives:
\[
x \leq 2.
\]
### Solving the second inequality:
2. \( x + 1 \leq 0 \)
Subtracting 1 from both sides gives:
\[
x \leq -1.
\]
### Combining the results:
Now we need to find the values of \( x \) that satisfy both inequalities.
- From the first inequality, we have \( x \leq 2 \).
- From the second inequality, we have \( x \leq -1 \).
The more restrictive condition is \( x \leq -1 \). Therefore, the solution to the original vector inequality is:
\[
x \leq -1.
\]
### Conclusion:
The solution set is:
\[
(-\infty, -1].
\]
Quick Answer
The solution is \( x \leq -1 \).
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