Math Problem Statement
(х-1)²(х+2)(х-3)³≥0
Solution
We are tasked with solving the inequality:
Step 1: Find the critical points
The inequality will change sign at the points where any factor becomes zero. Let's set each factor equal to zero:
Thus, the critical points are , , and .
Step 2: Determine the sign of each factor in each interval
We will divide the real line into intervals based on these critical points: , , , and .
Now, let's check the sign of the product in each of these intervals:
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For : The product is , so it's positive in this interval.
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For : The product is , so it's negative in this interval.
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For : Again, the product is , so it's negative in this interval.
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For : The product is , so it's positive in this interval.
Step 3: Check behavior at the critical points
- At , the factor , so the product is zero.
- At , the factor , so the product is zero.
- At , the factor , so the product is zero.
Step 4: Conclusion
The inequality holds when the product is greater than or equal to zero. From our analysis, this occurs in the intervals .
Thus, the solution is:
Would you like more details or have any questions?
Here are five related questions you can explore:
- What happens if we modify the inequality to strict ?
- How would the solution change if one of the factors had an odd power?
- Can you apply a similar method to solve other polynomial inequalities?
- What is the geometric significance of each critical point in the graph of the function?
- How does the behavior of even and odd powers affect the sign of the product?
Tip: Always check behavior at the critical points separately when solving polynomial inequalities.
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Math Problem Analysis
Mathematical Concepts
Algebra
Polynomial Inequalities
Critical Points
Sign Analysis
Formulas
(х-1)²(х+2)(х-3)³
Sign change method for polynomial inequalities
Theorems
Sign Analysis Method
Zero Product Property
Suitable Grade Level
Grades 10-12