Math Problem Statement
Solution
We are given the second derivative of a function as:
We need to find the x-coordinates of the inflection points, which occur where and the concavity changes.
Step 1: Find where
Set the second derivative equal to zero:
For this product to be zero, each factor must be zero:
- implies
- implies
- implies
Thus, the critical points are , , and .
Step 2: Check for concavity changes
For an inflection point to exist, the concavity must change at these critical points, i.e., must change sign.
-
At :
- is always non-negative and doesn't change sign at . Therefore, is not an inflection point.
-
At :
- is always non-negative and doesn't change sign at . Therefore, is not an inflection point.
-
At :
- is also non-negative and doesn't change sign at . Therefore, is not an inflection point.
Conclusion:
None of the critical points lead to a change in concavity, so there are no inflection points.
Thus, the correct answer is (A) none.
Would you like more details or have any questions?
Here are 5 related questions to explore further:
- How do you determine if a function has inflection points?
- What is the relationship between concavity and the second derivative?
- What is the significance of the sign change in the second derivative for inflection points?
- How would the process change if the exponents were odd?
- Can there be inflection points without roots in the second derivative?
Tip: Always remember to check for sign changes when determining inflection points!
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Math Problem Analysis
Mathematical Concepts
Calculus
Inflection Points
Second Derivative
Concavity
Formulas
f''(x) = x^2(x - 2)^4(x - 3)^2
f''(x) = 0 for inflection points
Sign change in f''(x)
Theorems
Inflection points occur where the second derivative is zero and changes sign.
Suitable Grade Level
High School (Grades 11-12) or Early College Calculus