Find the inflection point of the graph of .
Answer and explanation
Correct answer: B.
- Step 1: Inflection points occur where and the concavity changes sign.
- Step 2: Compute and .
- Step 3: Set .
- Step 4: Evaluate : . Thus the point is .
Answer
.
Why not the others: '' and '' are the local extremum points where ; '' miscalculates as 0.
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