What is the area under y = x² between x = 0 and x = 3?
Answer and explanation
Correct answer: C. 9 square units
- Step 1: Integrate x² to get x³/3. Step 2. Evaluate 27/3 − 0 = 9. Answer: 9. Why not the others: 27 forgets the division by 3, 18 doubles the area and 3 is the width only.
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